Upload & Sell: Off
This is a new one. I have a 580 and a 580ex2. I've used them both as on camera flash, often in master mode. All of a sudden, neither of them will work as master. When Master/Slave is turned off, everything is fine. With both, when I put them in Master they put out a tiny pop(less then the normal pre-flash), and will not trigger slave flashes, or provide exposure on the subject.
I find it hard to believe they both failed in the exact same way within days of each other. I've tried resetting my camera, and turning all custom flash functions off, still nothing.
To reiterate, I've used both flashes as master before, dozens if not hundreds of times.
Thanks in advance, Lance