RavPower Filehub RP-WD03


The Ravpower file hub is a self contained "All-In-1-Filehub" featuring a wireless router, wireless media sharing and 6000mAh external power bank.

Its main function is to be able to insert an SD card into the built in SD card slot and transfer its contents onto an external portable USB hard drive or flash drive.






The File hub, portable hard Drive and smart phone to access the file system of the Ravpower device either using a web browser or a downloadable app for IOS or Android devices.

I downloaded the Filehub Plus App from the app store for my iPhone but I found although the transfers worked flawlessly they were a little slow.

So I decided to see what options there were if you accessed the device from a web browser one the tablet or iPhone had connected to the wireless access point of the Ravpower unit.

When I looked at the tools available to copy/cut files from one device and create directories/paste onto another device I thought that this was a much better way and didn't need the Filehub plus app.


There is an advantage however of installing the app as it does allow you to make a wireless bridge connection to the internet from within the Ravpower app so you still have access to email and internet features whilst using the FileHub.


Here is the step by step method to copy files from your SDXC card (2TB max) onto an external 3.5 inch hard disk plugged into the USB port of the Ravpower device.






Begin by turning on the Rav Filehub. Press and hold the power on/off button for three seconds. The device will then boot up its own operating system.


When the blue Wi-Fi logo goes solid blue access the "Settings" option of your iPhone/iPad/tablet etc.








Select the Wi-Fi settings option and look for the Filehub SSID in the list of the available devices.







Select the device from this list







If this is the first time you have connected to the device it will require you to enter a password.

The default is 11111111 (8 1's)






Once the iPhone/iPad/tablet has successfully joined the Ravpower filehub network you will see the device name with a "tick" against it.


You can now press the home button on the iPhone/iPad/tablet and then open the browser app (Safari on IOS devices)





In the browser menu bar type the address and press enter






Once you hit the enter key you will be presented with the log in screen for the web browser app.


The defaults (unless you change the user/password feature) are fine just click the log in button




The browser will open up the main options.


If you click the  "settings" tab you can see information about the device itself and any connected devices.









If you select "information" you can then look at the connected storage devices









If you insert a SD card into the SD card slot the device will display this information










details about the devices - the hard disk and the SD card









If you then click the home button at the top right of the window you will go back to the main options screen









From there click the "Explorer" tab and that will show the two connected devices.









If you click the SD card, for example, you will then see the directory structure on the SD card


At the moment there appears to be an issue with iPhone 6/7 and the Safari web app. The device does not open the folders when clicked.


I have asked Ravpower for a solution

If you download and install Google Chrome it works fine!






By selecting the DCIM folder you will be able to see any camera based images stored in these folders.


In this example I clicked the 100canon folder









That then displays the list of individual files within that folder.

You do not get a thumbnail view like you do get if you use the Filehub app.










You can however view any of the image files, videos, pdfs or documents in that folder.









If you wanted to copy the whole folder and its contents to the hard drive attached so as to get a back up of the files on the SD card then place a "tick" in the folder that you want to copy.










Then click the "spanner" icon and choose the "copy" option








Use the "back" button to go back to the selection of the attached devices and click the hard disk device.


The again with the "spanner" options select "Paste".

This will copy the whole folder onto the hard drive.









During the copy process you will see the percentage transfer as the files are copied over from the SD card to the hard disk.







Once the bar reaches 100% you can then confirm that the whole 100Canon directory has been transferred over.

There are other options like using the Filehub plus app to transfer the files, using the device as the wireless bridge to allow many devices to log into this device which itself is logged into an external Wi-Fi source. So if you only have one Wi-Fi connection available, such as at an hotel paid for service you can connect this device and the connect your other Wi-Fi devices to this one.


If you have a USB hub you can plug this into the USB port and extend the number of connected devices - provided that you don't exceed the current capacity of the port.

Focus Bracketing App - GsimpleRemote


With Panasonic Lumix cameras with Post Focus capability it is possible to shoot a macro shot (or close up) and use the generated MP4 file in a program like Helicon focus to focus stack up to the whole of the 49 AF points which might have been captured in the image sequence.

If you have the FZ1000 then this doesn't have either a touch screen or the post focus ability. Until I found this "app" the only way I could create a focus bracketed set of images was to use a focus slider and manually advance the slider for each shot. This method does have some complications as the "perspective" of the image set changes at each advance of the focusing slide. This makes the focus stacking of the images quite difficult as the periphery objects in the image are changing position.


With this "app" it allows a smartphone or tablet device (either IOS or Android) to control the camera via a wireless link, The "app" controls the focus motor of the camera lens and has the additional feature that allows the user to define the start and end focus positions and the step increment for each image captured in the sequence.


9 images captured using the GsimpleRelease  app and combined in Helicon Focus 6 ( screen grab - see later explanation)
9 images captured using the GsimpleRelease app and combined in Helicon Focus 6 ( screen grab - see later explanation)

Below are the 9 images captured with the app and these were imported into Helicon Focus 6


In the image below is a demonstration of Helicon Focus 6 with these 9 images imported.

The first image with the front battery in focus is shown in the example



In this next image the program has run and combined all the 9 images into the final image




The program is very intuitive to use and has a 30 day unrestricted demo mode. After which if you save the image, copy it to a clipboard etc it is watermarked. For most purposes I "screen grab" this final image and that is what you are seeing here in this review.


If the licensing was for a once off payment I would probably buy it however it is only a yearly licence, and costly at that, and I don't think that I would use it that often during the course of the year to get value for money.


Below is a video demonstration of how to use this "app"



Mcoplus MCO-14EXT-C Xenon Ring Flash for Canon/Nikon

This is a full featured ring flash employing Xenon flash technology which is really necessary for good macro or close up photography. Whilst the LED units are OK they are more suited to static subjects and ideally tripod mounted shooting because of their lower power output. It is a almost full copy of the canon OEM ring flash but excludes the wireless function. With all the main features that any serious amateur photographer needs such as the ratio power control of the two flash tubes, flash exposure bracketing, flash exposure compensation, stroboscopic shooting mode and full manual control. It has a guide number of 14m at ISO 100 and has enough output power for F22 exposures at ISO 100 at normal macro working distances. E-TTL II control is available for fully automatic shooting from all the later Canon cameras and the flash can be controlled directly from the camera control menu or directly on the unit itself. Powered by 4 x AA batteries, which can be alkaline, Ni-Cd or NiMH it recharges in under 3 seconds. You can additionally extend the working time by use of an external Canon or third party battery unit. For camera without hot shoe it can also be triggered via the PC sync socket on the side of the unit (although not TTL mode!). Colour temperature is rated at 5500K and the results show no colour bias or spikes in colour output. The head swivels to allow the connecting cable to be either on the left or right hand side and the unit is provided with the usual range of 49mm to 77mm lens rings to mount the flash head to the lens. Two focus assist lights are provided as the unit will cover the camera's own focus assist LED. It is also provided with a nylon, belt mountable carry case and a flash foot. Instructions are a little poor to follow however it doesn't take long to work out what set up is required on the camera.



An example of an image taken with the ring flash using one tube at full power and the other with 2 stops difference (1:4 ratio). Using a Canon 70D in E-TTL II mode and a 24-105mm lens at 70mm with an aperture of F14 and ISO 125.



An example of an image taken with the ring flash using both tubes at full power (1:1 ratio). Using a Canon 70D in E-TTL II mode and a 24-105mm lens at 50mm with an aperture of F14 and ISO 125.

Mcoplus MP-MRF18 LED Ring Light Flash

The MCOPLUS MRF-18 Led ring flash unit provides shadowless lighting for situations where clear detail is important in the shot. Alternatively the unit can function with a half illuminated circle of light to provide some dimensional modeling effect. The unit is powered by 4 AA batteries and has a rated output from the 18 White LEDs of 5500K colour temperature, or by use of a supplied CTO filter 3200K. The LED's are focused to provide a uniform light pool at a short working distance to the unit (30cms is ideal). With the ability to control the light output from 1/128 to 1/1 in 8 discrete increments means that getting the exposure correct is very easy. The unit can be used in a continuous light mode (however only full 18 LED's illuminated) or pulsed 1/100 second burst of light from the left, right or whole light banks.

Light output is sufficient to give exposures of 1/60 sec f4.5 ISO 100 at 30cms with both banks on full power setting. The control unit uses pulse width modulation technology to drive the LEDs.

The 3200K CTO filter is useful to provide illumination in which there is already some tungsten ambient illumination. The unit comes with 8 lens adaptors ranging from 40.5mm up to 77mm covering all the main lens filter sizes.

Colour rendition is very good, however I would recommend performing a manual white balance set procedure with your camera to ensure the correct colour temperature operating point. Single +ve voltage triggering makes it suitable for most digital cameras and the extra low trigger voltage ensures no damage to your camera flash triggering circuits. To ensure the ring flash head doesn't move in angular position I would suggest you fit a small elastic band into the groove of you chosen filter adaptor, this stops unwanted rotation taking place during use.

During continuous LED light use the camera TTL metering can be used to set the exposure (using the whole 18 LED ring), during pulsed output manual exposure control and trial exposures will be needed as this unit does not feature TTL compatibility.

It is more suited to static, table top or tripod shots than say outdoor flower or insect shots which require a much faster flash duration to capture the image without motion blur.

MCOPLUS LE-520B Bi-Colour LED Light Panel


The Mcoplus LE-520B is a bi-colour LED light panel measuring 25cms x 12 cms x 4 cms and consists of a 24x 22 LED matrix (528 LEDs in total). Half of the LEDs are 3200K rated and the other 5500K rated. These can be controlled as a bank of light with control over brightness of each one using the power adjustment control or the supplied 2.4GHz wireless remote control. The unit weighs 2Kg when two Sony NP-F970 lithium Ion batteries attached.

The unit is able to be powered continuously via the supplied mains adaptor (15v 5A) or for about 2 hours with fully charged NP-F970 batteries - depending upon the power output selected. The unit has mounting lugs on all four sides and can be clipped together with other units to form a much larger panel if necessary. It also features threaded metal inserts of 1/4-20 size which allows the unit to be fitted to light stands, tripods or held with the included handle. Four reflectors or light baffles are adjustable to prevent light spill into unwanted areas. There is also a clear diffuser to provide some softening of the light output from the panel. This slides into a groove in front of the LEDs.

Power is provided to the LED banks using pulse width modulation which keeps the voltage the same but varies the ratio of on to off time of the applied voltage. This keeps the colour temperature constant rather than dimming the LEDs through voltage reduction which can lead to colour temperature changes. The power level is displayed on the rear of the unit on a two digit LED display and can be adjusted in unit increments from 0 to 99. Both the 3200K and 5500K LEDs can be adjusted independently. The unit has an inbuilt fan which in the auto mode powers up to cool the unit if it begins to overheat. The fan noise is noticeable at close distances when running at full speed however, it is unlikely to be picked up at the light placement distance from the subject. The unit, being wireless controllable can be assigned to 1 of 4 available channels so 4 lights could be set up and controlled with the one remote control unit. This unit also has a strobe effect lighting mode. The frequency of which can be controlled from 1 - 10 flashes per second in unit increments and then units of 10 from 10 to 90 flashes per minute. Power can be adjusted as normal for this mode.






The unit electronics are contained on two printed circuit boards. One for the microprocessor, fan speed and wireless control. The other for the PWM control of the LEDs. Construction appears to be of a high standard using SMD components in most cases. The LED panel has wide pcd tracks to reduce voltage drop to the groups of 4 LED per driving voltage rail. There is no provision with the unit to charge any attached lithium ion batteries, they need to be charged separately. 







Looking at the power output in terms of light intensity (LUX) at a distance of 1 metre to the measuring device and with the unit operating on the supplied 15v power adaptor the output from the 5500K LEDs at full power with the diffuser removed is about 1100 Lux. Photographically this converts to 1/30 second at f5.6 and ISO 320 for video production. With the diffuser fitted the power drops by about 400 LUX. The 3200K LEDs were just slightly under this level at full brightness. The Colour rendering index is quoted as 95 CRI however without specialist colour analysis equipment I could not verify this apart from the appearance of "Macbeth" colour test patches looking quite normal - especially the skin tone patches. 





Using the colour measurement tool in Photoshop and a camera RAW file the white patch was measured and showed 5450K and the R,G and B blue peaks on the histogram look to have the same magnitude indicating that the light is well balanced and there looks to be no spurious colour peaks. The 3200K LEDS measured exactly 3200K. Both LED light banks can be set to full power, or any inbetween mix of light, to give a total output of just under 2000 LUX however, the scene would need a manual white balance to be carried out as the mix of colour temperatures would be resulting in indeterminate values. At full power the combination, in my test, gave 4100K result.



Both LED banks at full power, no diffuser. Measuring 1953 LUX and 4100K CCT.


In summary a useful light source able to be used to provide a fill light for either tungsten (3200K) or daylight (5500k) lighting situations and made easy to adjust by the wireless remote controller. It may also be used to provide illumination for head and shoulder type interviews however as with all these smaller panels does not give enough illumination for head to toe shots without significantly increasing camera ISO.

Commlite EOS EF/EFS to Micro Four Thirds Lens Adaptor

I have around eight or so Canon lenses, both EF and EFS types with three of the lenses are also being "L" series. I have also 5 micro four third cameras and I wanted to be able to use the Canon lenses on the MFT bodies. Previously I have used passive adaptors and used the stop down and twist off the lens whilst the camera is still powered up to get a preset aperture rather than full aperture.


Whilst this has been a reliable method it suffers from the fact that you cannot change aperture, you are always in stopped down focus mode so setting the actual focus is sometimes tricky and you loose any EXIF information that might have been useful in an image (such as aperture and focal length used). Also there is no image stabilisation available.


I bought the Commlite unit as this seemed to address all the above issues (except autofocus) and a fraction of the Metabones IV unit.

Mechanically the fit of the lenses to the adaptor is very good with no perceivable lateral or rotational movement. There is a very small radial movement in the adaptor to the camera body but this does not affect the electrical coupling. Build quality is adequate, personally i would have liked to have seen 5 fixing screws around the front and rear flanges as some of the lenses that I attach are very heavy and exert quite a bit of force on the tiny screws. There is a removable tripod fixing foot which reduces this force rather than attach the camera to the tripod. With the longer Canon lenses it's best to use the Canon tripod ring for support.


In use the aperture is controlled from the camera and in video mode responds immediately to the change dialed in. You can step up and down the whole aperture range and the results don't show any problem with screen flashing as reported on some Metabones adaptors.

The "boot" up time with the adaptor fitted doesn't seem that much longer to get to the first exposure as with just a native lens and during burst mode shooting the adaptor/lens combination performed reliably.


In photo mode the camera remains at full aperture for metering and manual focus and then stops down for the exposure. I did notice a strange sequence of events when using the Panasonic GX8. When half depressing the shutter button the image stabilisation would pulse on any lens that had IS and the aperture would momentarily go to 0.0 then back to the preset value. Turning off the half shutter AF option in the custom menu stopped this from happening. As the lens does not retain AF it doesn't matter anyway. Results will be entirely dependant upon the Canon/third party EF/EFS lens.


After a period of extended testing I found that any lens with image stabilisation turned on would randomly pulse. If you were recording video at the time then this would be included in the clip thus ruining it. This happened with all the MFT camera bodies I own.


It would have been nice to have had front and rear caps supplied with the unit to protect the mounts when not attached to the camera.


Although this random pulsing of the image stabilisation of IS enabled lenses is obviously an unacceptable occurrence for video shooting handheld footage I guess if the camera is tripod mounted with IS turned off then the problem isn't that bad. In photo mode the pulsing does occur randomly but again isn't likely to be a major issue. I have contacted Commlite but as yet no response from them!


Here's my Youtube video review https://www.youtube.com/watch?v=MMZmqUTnDuc 







The Commlite adaptor fitted on the Panasonic GX8 with a Canon EOS 50mm F1.4 EF lens

Canon 70-300mm EF IS USM F4/5.6 Zoom Lens

Although this lens has been out for a number of years now I have only just decided to add this to my EF/EFS lens line up. My 100-400 L Canon f4/F5.6 lens is massive and heavy and for the kind of images I shoot these days it doesn't really justify me holding on to it much longer. I did toy with the idea of the 70-200 USM L lens but again I wanted just a little longer reach and the 100-300 IS USM L lens is just too expensive. Some reports have said this lens is very soft and others say it's sharp so I could not get any sensible conclusion after watching and reading several reviews. I, to be perfectly honest, have never really been a fan of Canon lenses for amateur grade cameras. All the ones I have tested (and reviewed by magazines) have confirmed that many OEM lenses from Sigma and Tokina have sharper charcteristics

The lens itself is designed as an Full Frame EF mount lens so it automatically will fit and function on the cropped format EFS lens flanged camera bodies like the 70D shown opposite. If fitted to these cameras you of course have the 1.6 x crop factor to apply to the focal length and the amount of depth of field. So in reality the lens becomes the equivalent of a 112mm to 480mm focal length lens with the equivalent FF depth of field as f6.3 to f9.0. With using it on a cropped format body camera there is an additional advantage of using the central areas of the lens thus not suffering some of the edge sharpness losses noticed when using the lens on a full frame sensor. Thus this lens covers the focal lengths that I was used to using on my 5D Mk3 with the 100-400 lens. Having tried cropping into the image of the 5D to match the 70D sensor size the loss of image quality was obvious. Thus the move to a 20.2 megapixel sensor theoretically gives better IQ.

There are non-IS versions of this lens at a quarter of the price however for hand held shots the IS is a significant advantage, in my opinion, when using the lens at longer focal lengths. Of course for absolute sharpness, especially with subjects which are moving, the established rule of 1/focal length should be used. So 1/500 sec at the telephoto end would be recommended. This will be at an aperture of f5.6 so ISO might need raising in order to get this exposure level. There is the usual stabiliser ON/OFF switch on the lens side. The Stabiliser mode switch provided mode and mode 2 operating parameters. In mode 1 the lens has stabilisation applied in all axis movements and in mode 2 the camera is stabilised in the vertical (Y) axis for landscape format and horizontal stabilisation when the camera is used in portrait format. The advantage of IS over non-IS is said to be the equivalent of 3 f-stops. The IS remains active for about 2 seconds after the shutter button is released.

The lens barrel extends about 80mm, or over 3.5 inches, on full zoom and uses the ring turning to the left to zoom into the telephoto focal lengths. At 70mm to prevent lens creep the lens can be locked at this position with a slide switch (mechanical lock) on the lens side. During Autofocus the lens focus ring (the narrower front ring) rotates. It is very easy to have your fingers in the wrong place when this happens!

FTM (Full Time Manual) focus is not provided - you must switch the lens to MF (Manual Focus) mode to manually focus the lens. To make matters worse, the 70-300 extends about 1" with focusing. To park the lens compactly you must adjust the focus to minimize the lens length. This means manually turning AF off, turning the focus ring to retract the lens and turning AF back on (so you don't forget next time you use the lens).  

The 70-300 IS is not parfocal - you need to refocus if you change the focal length. Combine a non-parfocal zoom lens with a rotating front element and you quickly get frustrated Circular Polarizer Filter users. This is a definite detraction for landscape photography - an otherwise great use for this lens. Canon's manual suggests that the front element should be held while attaching a 58mm filter or lens hood (to prevent it from rotating). 

The minimum focus distance is 1.5 metres or 4.9 feet however by use of automatic extension tubes the working distance can be reduced to allow the lens to be used for macro or close up work (you of course loose the infinity focus with the rings attached).

with a 12mm extension the closest focus at 300mm becomes 1.36 metres and with the 25mm ring the closest 300mm focus becomes 1.25 metres. Magnifications are 0.32x and 0.39x at the closest focus setting.

I tested the autofocus ability of the lens shooting a video sequence. The USM motor gives a "stuttering" transition from focus point to focus point if you invoke a "focus pull" from the touch screen enabled camera, like the 70D. With a STM (stepper motor) lens this operation is smoother and quieter.

Here are some sample images taken with this lens on the cropped sensor Canon 70D.

Sample Images Shot Using The Full Frame Canon 5D mkIII

I did a series of focus tests using my focus chart at 70mm and at 300mm. The images below represent the centre target cropped from the image at full size rendered to the same screen size and the 100% crops of the F8/F11/F16 images from the 300mm zoom setting

 In summary I would say the lens takes at least until f9 to reach a point of sharpness that I like to see. This extends to about f13 or f16 on the smaller aperture side. When you reach f22 you can see the resolution fall off due to diffraction limited resolution. I have not yet tested the lens with a test chart with my full frame 5D mkIII, however test images look as good, if not better than the 70D.

Included below are the lens test charts. The first series at 300mm and the second one 70mm. 

The 70mm Test Chart (crops from image with no scaling)

My practical video test using this lens is here on Youtube  https://youtu.be/Ei9t2DEb4RE

Aperlite YH-500C E-TTL Flash Gun Review

This recent addition to Aperlite's line up of flash guns adds a E-TTL compatible flash gun to their entry level flash units. It builds upon the manual only YH-400 by adding communication pins to the hot shoe to allow the E-TTL communication between camera and flash gun. It is essentially the same specification and size as the YH-400 so I won't repeat the description available in that review. The E-TTL is only available whilst the camera is attached to a Canon camera, it is not a wireless optical slave unit as in the case of the flagship model the YH-700C but just E-TTL via the hot shoe. It supports the same Multi (strobe) mode and the optical slave S1 & S2 modes as the YH-400. This model supports second curtain synchronisation in the E-TTL and Manual modes which the YH-400 does not have. In this flash however the flash head now has logic which forces the zoom head back to the minimum position when the wide panel diffuser is pulled out. In this mode manual zooming is not available. This is a great feature that is not available in the YH-400 entry, manual only unit or the Flagship YH-700C There is a Nikon unit available the YH-500N


Colour rendering was very good and E-TTL exposures pretty consistent, only changes being made to subjects which had varying brightness so I guess it isn't using the distance information from the lens that is available in the E-TTL protocol from Canon which eliminates some of this variability. Here are some sample images using this flash gun.


Neewer FC-16 Radio Flash Trigger

Radio flash triggers offer superior performance over the simple optical slave flash systems. They have extended range of operation (up to 100 Metres compared to the 15 Metres of the optical units), don't need to be in line-of-sight of the transmitting flash gun and can be used in sunlight.

The Neewer FC-16 for the Canon flash system is a 16 channel transmitter/receiver system and can additionally be used as a remote camera shutter trigger as well. Powered by two AAA batteries the receiver and transmitter have the same physical profiles, the receiver not having any electrical contact on the hot shoe base whereas the transmitter has the full 5 pin configuration (I'm not sure that any of the other communications pins are used though). In the flash slave mode the indicator LED on the top of each unit pulses green and when used as the remote camera shutter release pulses red. The kit comprises all the necessary cables to connect the professional level cameras like the 1DX and %d series using the C3 cable and the consumer/pro-sumer cameras use the C1 cable. Additionally the transmitter unit can receive its trigger pulse via a PC sync port from the camera if the camera doesn't have a hot shoe. In the remote camera shutter mode the receiver is connected to the remote input socket of the camera via the C1 or C3 cable. The receiver is switched to camera position and the transmitter set to either camera for instantaneous firing or delay for the 5 second delay timer. It will work on Panasonic cameras and you can get the adaptor cable for the Panasonic remote connection.


Aperlite YH-400 Flash Gun Review

A few weeks ago I was sent for review the Aperlite YC-700 ETTL flash gun. Now I have received the less featured YH-400 flash gun for my review. Basically the YH-400 unit features just the following features.

1. Manual mode 1/1 to 1/128 power settings

2. Strobe mode

3. S1 & S2 slave flash modes

As it has only the central firing pin on the base of the hot shoe it can be used with a number of cameras but it is specifically targeted as Canon and Nikon DSLR users. Because of this the unit cannot communicate its state of charge readiness to the host camera nor can it utilise the signals from the camera to trigger things like the focus assist light. 

This unit then has potential operation as either a simple manual power on camera flash unit with a high guide number of 58 metres with ISO 100 and the zoom set to 105mm focal length or as an optical slave device triggered in the S1 ( immediate) or S2 (pre-flash delay mode). Additionally it could be used with a radio trigger/ receiver device to turn this into a standalone manual power flash unit.

It is powered by 4 AA size batteries (Alkaline or NI-MH type) or it can be powered externally for the flash charging circuit with the MK_SD8A power pack which is a Nikon speedlite socket rather than a Canon type.. It has a similar head bounce and swivel adjustment range as the Aperlite YC-700 that being 90 degrees to the right and 180 degrees to the left giving a 270 degree of rotation. In vertical movement terms it can be set from -7 to 90 degrees with detents at 0, 45, 60, 75 and 90 degrees.

The unit has a pull out wide panel diffuser which will allow wide angle lenses of the 18mm focal length to be used. Additionally if using the flash in the vertical bounce flash mode there is a pull up white plastic panel which acts to provide a "catchlight" in the eyes of a portrait head shot.

The flash recycling time using alkaline batteries was a little over 3 seconds from a full power discharge, the indication of charging being the red pilot light blinking until the flash has fully recharged where it remains steady. There is no audible warning or any front facing LEDs to indicate the charging is still continuing. In the Slave modes again there is no indication on the unit to signal that the unit is fully charged and ready.

The unit is supplied with a plastic foot which has a 1/4-20 metal threaded insert to fit the unit on a lamp stand or tripod, It also comes with a black nylon drawstring pouch however it doesn't look like the waterproof pouch supplied with the YH-700C

Again in testing, as with the YH-700C, I found the flash output a little short of the stated values. Here my flash meter records F20 at 4 feet (with the flash zoom head set to 105mm as quoted) which gives a guide number of 80 feet. The guide number of the unit is quoted at 58m which should give a guide number of about 190 feet. That being the case the flash should output F48 at this distance which is about 2 stops output more than achieved. Up until near full power the metered output and the camera exposure, set to the indicated flash value, gave perfect exposure. I can only conclude the guide number is ambitious.

In use the gun performed perfectly and I used it to produce this image in a three flash set up using the YH- 400 as main light source in a reflective umbrella set at 1/2 power, one YH-700C with soft diffuser as a fill light set at 1/8 power and a YH700-C as a hair light set at 1/64 power

So in summary it does everything a slave flash gun should do, the two slave modes S1 and S2 work predictably and the manual mode adjustment is all that a manual flash gun needs. I would trigger using wireless triggers, it triggered on Panasonic and Olympus and on my Sony Q series of cameras. I would suspect, though have no proof, that being a single trigger positive voltage device it will probably work on most conventional hot shoe cameras.

Unfortunately the unit does not support high speed synch and the manual is wrong in suggesting it supports auto zoom, flash exposure bracketing and flash exposure correction - it cannot because it does not have the communication bus to the native camera


The Toshiba FlashAir card is a new generation wi-fi SDHC card which has a wireless access point and web server integrated into the card. It is different to the "Eye-Fi" card in respect that it doesn't "push" the images to the viewing device instead the images are viewed in your standard browser on your device. The card can be viewed by up to seven devices simultaneously using the wi-fi network.

Connection to the card is fairly straight forward and you can choose to connect directly to the device selecting the "Flashair" wireless access point which will appear in the wireless settings section of your viewing device. It can also be used in the "internet passthru" mode which allows the card to be accessed via your router so you need to be in wireless range of the router to do this. Outdoors without internet access you need to use the direct connection method. I must admit the printed instructions that do come with the card are extremely vague and you do have to use the "help" screens which are provided in the IOS app or pc software. Without those setting up the administrative parts of the Flashair card would have been impossible. 

On IOS and Android devices the application is started from the icon on the desktop.

The card must be inserted in the camera and the camera turned on. One point to note is that there is a software timer on the Flashair card which you can set between 1 and 5 minutes. If the camera is not sending images to the card during this period the wireless function of the card shuts off and you have to press the shutter button or power cycle the camera to turn it on again otherwise the card will not be seen by the viewing device!

It's possible to configure the app to list the files on the card with small thumbnails and shooting file number/date etc or by file type (can display music and video files as well as photo files) however its probably best left in the default square thumbnail view, or, if you prefer the thumbnail in the correct aspect ratio can be selected

This is the "app" on IOS device with the card "paired" and the  thumbnails (square format selected) displayed. You have the option to view either the card or your camera roll on the device. 

Tapping on one of the thumbnails will present the file in full preview mode and whilst this is displayed another double tap allows the option to save or email the file. The fundamental flaw of this application is the fact that you have to do this image by image! 

That's why I recommend that if you get this card download the Olympus Image share app. It does have support for the Flashair card so you can use the all important "Import Photos" option that this app supports.

the first thing to set up would be the file size for images transferred to the device. If you want back up of the images the select "original size" or if you want to send them to your device at a resolution more suited to it then select one of the other options available

One you have set the import files size the tapping import photos will bring up the thumbnail views (in the correct aspect ratio) from the card.

Again a tap of the thumbnail will show the full sized preview of the image. You can then scroll though the images very quickly as they are rendered at low resolution until you stop scrolling and then the rendered at the full resolution.

To save any (or all of the images) on the card tap the select label at the top of the screen (which then turns to Cancel) tap on the images you want to save or if you want all to be saves tap "Select all" 

When you tap "Save" the label "Save to Camera Roll" appears and a quick tap of that starts the files transferring from the card to your device.

transfer speed is about 8 seconds per 4MB jpeg camera image so it is a long transfer if you are trying to back up a days photo shoot this way and I would recommend using the option to use an external card reader with your tablet/laptop if you are wanting to do this.

One thing to remember is the camera "hibernate" will kick in and shut down the transfer if you don't remember to turn this off in the camera power saving menu!

If this happens you will have to reconnect to the card again however the thumbnails will have been deselected and you will have to look at the camera roll to find the last one imported to find where to begin from again!

The Olympus app does allow you to make some preset image adjustments and add signatures etc before saving them as a new copy of the image. I will look at these in a later review.

So in summary you need the Toshiba app to set up some of the administrative rights for the card however you can ignore this if you just want to use the default password supplied with the card 12345678. 

The card appears to write fairly quickly in the camera and I had no issues recording 1080p video. It's great for seeing an instant preview of the image and unlike the EYE-Fi card which pushes every image to your device as they are shot with this card you select the ones to pull over to the device if you want a back up copy. I was happy to preview the images shot whilst I took a break from shooting and downloaded all the image from my card reader into my pc on return home. If you wanted to transfer and email or share an image to a social network site then providing the preview device had internet access you could do that there and then. It was not possible with mu ipad wi-fi only device out on a shoot so I couldn't test this.

ipad camera connection kit and USB to camera cable connecting the camera.
ipad camera connection kit and USB to camera cable connecting the camera.

If I was wanting a faster preview and download in the field I would still recommend the camera connection kit for the ipad and use the usb camera cable to connect to the card in the camera and download from there - its much faster at about 1 second per image. Of course your shooting is interrupted as you have to go into the camera connection mode and USB transfer option so it isn't quite as immediate but is another option


The Aperlite YH-700C is a dedicated E-TTL compatible flash gun for Canon cameras. It adopts the same protocols and most of the features of Canon's Speedlite 580 EX (not the II model as it doesn't support external auto flash metering "E" mode). It is compatible with the E-TTL II, E-TTL and TTL flash modes of Canon cameras so provides backwards compatibility across a wide range of Canon cameras. 

The unit supports the camera communication protocols of exposure compensation, exposure bracketing, AE lock, aperture preview, high-speed sync (maximum sync speed of 1/8000 s), first and second-curtain sync also features automatic focus assist function and supports automatic / manual zooming. Additionally it can be set to provide the correct zoom when used with cropped sizes sensor cameras.

The flash features a maximum guide number of 58m (190 feet) at ISO 100 when then flash head is zoomed to 105mm setting.

In practice this related to F22 at 5 feet flash to subject distance when fired at full power.

The unit covers a focal length range of 24mm to 105mm and with the pull out wide panel diffuser allows 14mm lenses to be used.

It can serve as a master or slave unit in the Canon optical wireless ETTL mode and S1 & S2 modes (i.e. with and without pre-flash suppression).

It can also be used as a manual flash unit with 8 levels of output power control from 1:1 to 1:128 power in 28 increments (1/3 EV). It supports stroboscopic firing, however this is at a reduced power output which can also be used as a  "modelling light" activated from the flash of the camera DOF preview button.

It takes only 3 seconds for the flash to be fully charged after a full-level output using alkaline or NiMh batteries (4 AA size). The number of flashes per set of fully charged batteries will depend upon the flash power used and if high speed sync is used, however it is quoted at between 110 and 1500 flashes. I shot over 160 images over the period of a day and the recycle time was always very fast. Charging state can be set to provide an audible status of the flash capacitor charging and you wait until you hear the longer audio beep which signifies the flash has fully charged. This is useful if you are using the flash as a slave and off camera.

The flash head has full tilt and swivel control allowing adjustment of -7 degrees to 90 degrees in a vertical plain and 90 degree left and 180 degree right in a horizontal plain. This allows for bounce flash when used on camera and to allow the red filtered receiver window to be sighted to see the master flash transmitter's flash pulses for TTL control. The head does not have any locking facility of its position and does not (like the Canon speedlites) give warnings about the - 7 degree vertical angle or set bounce mode zoom to 50mm setting. It does not provide warning that the flip down wide panel diffuser is in place if used in a vertical bounce mode that the canon models provide.

It has a metal hot shoe but with the locking ring rather than the locking lever of the 580EX 11 model. It also does not provide the environmental waterproofing that the Canon units have.

There is PC sync socket and a socket for power packs such as the Canon CP-E3 or CP-E4 units

The unit Dimensions are 78.0 x 146.0 x 118.5 mm and it weighs 490g with batteries fitted.

The unit is provided with a soft carry pouch and a flash foot which does have a 1/4 - 20 threaded metal insert for attaching to a tripod or light stand. There is a comprehensive instruction manual that may take a little reading to fully understand the full feature set. It is better to set this unit up using the canon Speedlite menu in the camera which is part of the Canon EX flash protocol available with mid 2012 onwards cameras.

Colour temperature looks natural daylight and is quoted at 5800K. 

Construction is fairly robust, the only areas of weakness may be the pull out catch-light panel, the wide panel diffuser and the battery door.

Improvements would be the inclusion of a flash confirmation LED (as on the Canon speedlites) and a longer LCD back light time as this is quite short. I, personally, would have like to see a sturdier carry pouch with a belt loop and with space for the flash foot.

Overall a very decent flash unit and well up to serious amateur level use. It's worth buying a couple of units so that the full potential of a master-slave lighting set up can be utilised. 

Although the unit has dual function buttons to allow the set up of all the units parameters by far the easiest way to set this unit up is to use the new EX protocols which are in all Post mid 2012 Canon cameras. Depending upon the model the access to this setup is found in the photo set up pages under "External Speedlite control"

The flash must be attached and powered up either directly or via a ettl extension cable to provide the electronic communication needed.

The expanded menu for the flash unit control allowing the external unit to be set for average or evaluative metering and the flash sync speed when used in aperture priority mode.

In the flash function settings the camera can set ETTL, M or Multi mode, enable the optical wireless control, control the zoom, first or second curtain or select high speed synch mode. You can control flash exposure compensation and flash exposure bracketing.

(not if you use the buttons on the flash to set flash exposure compensation this will over-ride any camera set value)

button control of the flash unit
button control of the flash unit

When the flash is attached to the camera it is easy to set up this unit as either a master controller with or without the master contributing to the exposure or as a slave unit. If it is a slave then it is possible to assign it to one of three groups ( A,B or C) and one of 4 channels (1 to 4).

When installed on a Canon speedlite compatible camera set to the "Auto" or Program Auto "P" mode the flash unit behaves entirely automatically. It receives all communication from the camera via the hot shoe connection

In this mode, when the camera shutter button is half depressed the LCD display of the flash unit details the zoom level of the head and the camera selected aperture. The distance scale indicated the usable range that the flash can be used at. Being the new ETTL2 protocol, on supported cameras, the flash uses distance information from the lens as well as pre-flash firing to determine the correct flash exposure. This method allows easier shooting, for example wedding photography, where the subjects may have varying contrast in the form of the bride's dress and grooms suit.

The flash unit control buttons 

Mode: This bigger button cycles between the 3 main modes E-TTL, Manual and Multi (strobe flash)

Light button: Turns the back-light on, a longer press enters the custom settings mode (CFn)

Arrows: Cycles the HSS mode and activates second curtain sync.

Music button: This controls the audio signal on/off

Zoom button: Manually change the zoom of the head, a long press enters the “optical wireless flash set up modes” 

Central button: Pressing this lets you set the flash exposure compensation or the flash bracketing mode. Used in combination with the 4 way controller you can adjust settings in other modes.

Pilot: This fires a test flash to reflect the settings (ie strobe or manual etc). The power output is set in the CFn set up menu to 1:1 or 1:32 power

Camera set to provide optical wireless control using channel 1, the on camera master also contributing to the exposure and controlling all groups. It will also set 1/3 ev exposure compensation to the master flash in this illustration.

The LCD screen showing the flash set up as channel 1 master, contributing to exposure with manual zoom set to 24mm

When the flash is set up to be the master group controller the slaves can be set during the pre-flash communication. A and B slave groups can be set to equal power or can be set to provide a ratio lighting effect. Flash group C are set using EV units, e.g. +/- 1 EV equals +/- 1 f stop which doubles or halves the amount of light reaching the subject from that flash group.

The LCD display when the flash unit is set up for ratio control using the 3 groups where A , B and C will fire with the same power level.

Using the Flash Customisable functions menu within the camera to set the flash parameters is far easier than using the reference manual as the camera displays the code and the values for you!

When using the flash unit in a bounce style there is a pull out "catch-light" panel which helps to put a small catch-light in the eye. The panel is only effective if the flash is used with in  5 feet of the subject.

The unit supports focus assist by a laser diode firing a criss cross light matrix on the subject which the camera can use to determine the correct focus point.

The head can be rotated to allow the flash sensor window to be orientated so that tit faces the master flash transmitter.

The head does not have any locking mechanism unlike the canon speedlites and there is no warning that you may have the head set at -7 degrees or the wide angle panel in place as you have the head set up for ceiling bounce flash. 






After several re-visits to the flash power being produced by this unit I have concluded that the output guide number of 58 metres is quite ambitious.


With the same flash set up parameter of ISO 100, Manual full power and the zoom head at 105mm when I set up the flash at a precise distance of 4 feet the power of the flash was F29. This effectively gives a real guide number of 116 feet or 36 metres. I repeated the test with the second flash unit and it gave an effective guide number of 100 feet or 30 metres. If you were using a flash meter to set up your shots then this wouldn't be an issue but if you were using the guide number / distance to give you an aperture value it would be very much underexposed. Similarly using E-TTL the exposure would be OK but distances may be somewhat reduced at the maximum end of the scale. At 15 feet the flash meter gave a reading of f8, from a theoretical guide number/ 15 this should have been f13 so almost 1.5 stops under exposed. using the "real guide number of 116 /15 gave the same as the flash meter f8.  So the actual output of the unit is more than 1 stop than quoted and that is effectively half power!


In E-TTL mode the exposures were fine so I guess if you are using these guns manually you would be advised to use a flash meter or make test shots to get the exposure correct

A series of images taken with the flash using an ettl extension cord and with the flash set in the ETTL mode held at 45 degrees to the subject and above it to simulate sunlight.


The battery pack is an external flash power pack for Canon Compatible flash units and supplies the re-charging power for the flash while the internal batteries of the flash unit attend to the power required by the zoom and processor of the unit. This means you can get some much faster recycle times from the 8 AA battery pack or longer flash picture taking sessions.

The unit comes with a long 1/4-20 screw which means you can attach it under the camera, however with all of my Canon cameras its size and position meant I could not hold the camera correctly plus the additional weight of this unit with its full complement of batteries made the combination very heavy!

I does come with a nylon pouch which does have a belt loop and also a velcro strap which you could fasten the unit to a tripod or light stand.

The unit requires 8 AA batteries, either Alkaline, Ni-Cad or Ni-Mh.

I use 2400mAH rechargeable Ni-Mh cells in the unit.

The springs inside the unit were very strong and it took a few attempts to get the battery door closed and locked. This could have be due to the length of the batteries used so I tried another set, however with the same results. The door and latch do seem to be under a lot of strain from this!

The coiled cord has sufficient length to use the battery pack attached via the belt loop on your trouser belt if you are a man however female users would have to resort to a separate belt to support the weight of this unit.

The unit does have a warning of not using it for more than 50 consecutive flash bursts before allowing it to cool for 10 minutes.

There is no ON/OFF switch on the unit, as soon as you attach the unit to the flash gun, and turn on the flash unit,  the LED on the side of the unit turns on with a green colour. After a flash discharge the LED turns red to indicate charging and finally green as the flash unit has full recharged.

In use I found it to provide quicker recycle times than using just the internal batteries of the flash. My only concern for my type of use for my external flash out in the field is that I normally hand hold the flash on an e-ttl extension cord to the camera hot shoe and now I have another coiled lead from the flash to the belt mounted flash battery pack and I can see tangled cables scenes arising here. The plug orientated the cable upwards where I would have preferred it exit the cable downwards for my particular flash guns, however this will depend on the type of gun you expect to use with this unit.

I've just taken delivery of an alternative the Shoot model above

and it is the NEEWER SDT-1501 model. This unit supports two banks of 4 cells so you can either use it in a 4  or 8 cell configuration. The batteries are much easier to load and the door isn't under as much strain as the Shoot model. Recycle times are very fast ( 1.2 seconds). You get a tripod mount screw however there is no carry pouch with this model.