I recently took possession of a set of 4 Yongnuo 560 III flash units and a Canon 70D (and legally ).
The flash units have built in radio triggers and I use a trigger (rf-602) on camera.
I have the trigger and the flash units set to the same channel.
When I use the camera/flashes (everything manual mode) and using the viewfinder (optical), the units trigger as per expectation. No problems here.
HOWEVER, when I put the camera into liveview mode, the flash units don't trigger (seconds before it works in optical viewfinder mode, no changes to anything except switching to liveview).
I haven't had time to try as a tethered system (wireless or cable) as yet so I don't know if there is an issue there.
Anybody have ideas as to what I am doing wrong?
Thanks in advance.
Graham