Buy Yongnuo RF-603C II Wireless Flash Trigger Kit for Canon 3-Pin Connection featuring Frequency: 2.4 GHz, Range: 328', Channels: 16, Flash Sync Speed up to 1/320 sec, Dual-Function Shutter Release, Can Set Transmit and Transceiver States, Hot Shoe Mount, PC Sync and 2.5mm Ports, Shutter Release Cable Included, Each Trigger Runs on 2 AAA Batteries. Review Yongnuo RF-603C II published 5 July 2023. There has allegedly been the first glimpse of the long rumored Canon EOS R5 Mark II out in the hands of testers. (Image credit: Digital Camera World) The Canon EOS R5 Mark II has apparently been spotted out in the world in the hands of professionals testing the camera. With the camera in the hands of testers, that means Canon R6 Mark II Review - R6 Mark II Specifications. Photo News. News. Photo News; New on the Site; News Archive; Topics. Canon 5D Mark IV. Canon 5DS R . Canon 6D Mark II. Canon 77D. Canon 7D LdYK9p.