I have 430EXlll RT and it's inconsistent in M. Im finding the only time it works more often is when the RT sensor is pointing in the direction of the camera. If it's radio it should not matter but it seems to. Frustrating for outdoor shooting.
Not using a trigger. I have the 80D that has built in RT. I'm just a few feet away. I will try a different channel and see how that goes. Thanks for the response
