Additionally, the transceivers run on 2 AA batteries each. A high speed sync mode is available and will help in bright lighting conditions and for stopping motion with a maximum speed of 1/8000 second. Multiple sync modes are available for more specific needs or effects, including 1st 2nd curtain sync. On the device is also an AF assist beam to help in low-light conditions. The YN-622C utilises a series of LEDs to display settings and allow users to make adjustments. And, it can utilise 7 channels and 3 groups for setting up multiple flash units easily and efficiently. Additionally, there are both TTL and manual flash modes available for full creative control. When connected to a strobe via the PC sync port, a Super Sync function will allow photographers to achieve a faster sync speed than normally possible with their camera. The transceivers also have a hot shoe and PC sync port available for mounting a flash unit or connecting to a strobe. A variety of features have been added in the model, including support for group ratios and multi flash. The SuperSync option reduces position jitter for MOPA laser system architectures by a factor of 10 to 50 (repetition accuracy <3 µm standard deviation). For usage, one transceiver slides directly into the hot shoe and utilises a 2.4 GHz frequency with a range of 100 m to trigger the remote flashes mounted on the other transceiver. To handle the timing jitter SCANLAB developed proprietary SuperSync controls enabling high scan speeds without compromising spot placement accuracy. Compatible with Canon E-TTL / E-TTL II cameras and with added support for 622 and 560-RX communication protocols this set will function well with many flash units. Trigger flashes wirelessly with this 2-pack of YN-622C II E-TTL Wireless Flash Transceivers from Yongnuo.
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