YN-622C E-TTL wireless flash trigger is a high performance master and slave equipment of multiple flashes photography, through digital FSK 2.4GHz radio wireless transmission, distance of remote control reaches 100M, supporting 7 wireless channels and A/B/C three groups.

Remotely change the modes and parameters of the flash quickly when using the Canon EOS series DSLR cameras which support external flash function Support high-speed sync, the max sync speed is 1/8000s*,Support E-TTL, Manual and Multi flash modes. Support E-TTL flash installing on the top of transmitter.

Compatible with ALL YongNuo/ Canon EXII series flashes,and strobe flashes. Compatible to 5D Mark III Compatible to new speedlite 600EX RT

Supported Functions List Compatible flash mode: E-TTL (II)/ Manual/ Multi Compatible Shutter sync: 1st curtain, 2nd curtain,high speed sync (HSS/FP), Max 1/8000s sync speed Control remote flash using camera's flash control menu screen(Remote Control Mode) Support E-TTL / Manual/ Multi flash mode mix using(Mix Control Mode) Flash on hot-shoe of transmitter supports ETTL Support Flash Exposure Compensation (FEC) Support Flash Exposure Bracketing (FEB) Support Flash Exposure Lock (FEL) Support modeling Flash Support E-TTL group ratio (ALL/ A:B/ A:B C) Support Manual/Multi group (ALL/ A:B/ A:B:C) Support flash zooming (auto, manual) Support AF assist beam emitter(AF Lamp) Support PC port triggering strobe flashes and support 1st, 2nd cur tain/HSS (Super Sync) Support LCD Live view triggering Support high-speed continuous shooting trigger Settings saved automatically Compatible with ALL YongNuo/ Canon EXII series flashes Suppor t single-contact of camera & flash triggering (max sync speed is 1/250s)

*On compatible cameras/flashes

manual: http://www.yongnuoebay.com/sm/yn622cy.pdf