580 EX II Problem (ETTL changed to TTL)
I'm having problem with my speedlite 580 EX II, sometimes when I used the flash on my camera (5D & 30D), when I set the mode to ETTL, suddenly it changed to TTL, and I couldn't switched it back to ETTL again. I tried to restart both the flash and camera, but still didn't work. The worst thing of this issue is that my camera couldn't take any shot even when it's in TTL.
Does anyone had this problem and know how to solve it? Thanks in advance for your response.
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