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Canon 5743B003 ST-E3-RT Speedlite Transmitter
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- Radio frequency remote flash trigger
- Fire selected Speedlites from 30m away
- Controls up to 15 flashguns
- Remote camera triggering
- Weather sealed against dust and moisture.
- Part of the E-TTL II flash system
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|Sold By||technolove||technolove||H.U. PHOTO||Sheratown||Wiston-Offical (VAT_Registered)||Amazon.co.uk|
|Compatible Devices||—||Canon||Canon||YONGNUO YN-E3-RT Wireless Speedlight Transmitter wireless flash shooting for Canon as ST-E3-RT||—||Canon|
|Item Dimensions||6.74 x 7.74 x 6.15 cm||9.82 x 7.05 x 11.38 cm||7.9 x 14.3 x 12.3 cm||11 x 9 x 7.5 cm||—||7.5 x 13 x 10.5 cm|
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Fire compatible Speedlite flashguns over distances of up to 30m. Radio-frequency control provides reliable operation even when direct line of sight is not possible. A radio-frequency flash trigger aimed at professional photographers using off-camera flash. Reliable off-camera flash control: Control compatible Canon Speedlite flashguns over distances up to 30m. 2.4GHz radio frequency triggering operates reliably, even when shooting outdoors and around corners - direct line of sight not required. Multiple flash photography: Create intricate multi-flash lighting set ups, triggering up to 15 Speedlite flashes with a single camera-mounted Speedlite Transmitter ST-E3-RT. E-TTL II flash metering makes exposure control easy. Remote camera control: Trigger an EOS camera fitted with a Speedlite Transmitter ST-E3-RT from a second unit or from a compatible Speedlite flashgun, such as the Speedlite 600EX-RT. Up to 15 cameras can be triggered at once, for synchronised shooting. Easy to use design: The Speedlite Transmitter ST-E3-RT is sealed against dust and moisture to the same degree as professional EOS cameras and L-series lenses. It features an easy to read back-lit LCD control screen and is powered by two AA/LR6 batteries.
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I have a 5DMkII and can confirm it works very well with this controller, even with high-speed sync. The ST-E3 will allow control of upto three 600EX-RT flash units with the 5DMkII, but if you want to do more creative work with multiple flash units then you need a 2012 model camera which will make use of the 'groups' feature to control upto 15 flash guns.
The other limitation is that it does not include a focus-assist beam like its predecessor, but if that is important to you then you're better off getting the 600EX-RT which has all the features of the controller built-in.
Ordered the last unit in stock from a marketplace seller in Germany and it arrived within a few days as promised. I got it together with a 600EX-RT from Amazon and am very pleased with both purchases.
In my opinion, Canon has a winner on their hands with this new wireless system, and if it wasnt for the price i'd say buy it without reservation!
Some folks have complained that the unit has no focus assist, now whilst that is true, any remotely positioned 600EX-RT flashgun that has it's focus assist light enabled and positioned on the subject, will allow a 5D MkIII or similar to focus accurately IN A COMPLETELY DARK ROOM!
So perhaps the one downside is that the ST-E3-RT doesn't have an optical capability to control older flashguns and its true, that is a shame. However I moved away from optical control a few years back, as it was too unreliable and to now have RF control built-in to flashguns, without extra interfacing, is simply fabulous.
A big learning curve for me having used radio slaves in manual mode only, but it's obviously the way forward and stops a lot of toing and froing to each flash now you are able to set them directly from on top of the camera. At just over £250 (Amazon May 2014) you might think a tad expensive, but the unit is packed with all the same electronic gizmos as the flashgun itself so I can understand why. It uses 2 AA batteries which is handy as they are common to buy and in keeping with the 600, (thank you Canon), is well built as you would expect and sits well on camera. I suppose my only slight niggle is you can't alter the throw of the flash from the transmitter so if you need a narrow beam say 200mm instead of 24mm then it has to be done manually on the gun itself. Fingers crossed Canon will make all future flashes compatible with the transmitter so they all might work as a system. All in all a worth while purchase if you have the 600 flashes and don't want the weight of a 600 on top of the camera to control your remote flashes.
It gives exactly control with lots of options from each flash independently to them grouped.
Access to the settings is easy, and with a little experience the changes can be made quite quickly.
It's not a cheap option but the wireless flexibility gives much better control than optical slaves.