Problema flash da studio + flash interno Canon 7D? Internet ho bisogno di voi! Hi! This is my first post ever on Reddit, please be gentle. I just can’t find a solution to my problem or figure out where the error is. I have a Canon 7D and a Pro Studio Lightning studio flash, which I connect to the camera via a sync cable. Everything works, the problem is that the external flash only fires if and when the built-in flash is o…