RF-603 II, the manual Flash trigger and shutter release ( you can use those two functions simultaneity ), it adopts a global free FSK 2.4GHz wireless channel which can be suitable in many countries. RF-603 II with FSK system, can be more effective to guarantee speed, distance and stability. Within capacious areas, the remote control distance may reach to 100m, and is suitable for the first generation RF-603.
Improved Features:
Higher sync speed than the first generation
-- The highest flash sync speed up to 1/320 second (some of models may only reach
to 1/250s or less, difference combination of models of flash and camera using may
RF-603 II, the manual Flash trigger and shutter release ( you can use those two functions simultaneity ), it adopts a global free FSK 2.4GHz wireless channel which can be suitable in many countries. RF-603 II with FSK system, can be more effective to guarantee speed, distance and stability. Within capacious areas, the remote control distance may reach to 100m, and is suitable for the first generation RF-603.
Improved Features:
Higher sync speed than the first generation
-- The highest flash sync speed up to 1/320 second (some of models may only reach
to 1/250s or less, difference combination of models of flash and camera using may