600RT Flash bug in new Canon 5DIII firmware.

Started May 12, 2013 | Discussions thread
OP MASTERPPA Contributing Member • Posts: 867
Re: 600RT Flash bug in new Canon 5DIII firmware.

Canon has not gotten back with me. yes, since I have the older firmware and the AF in dark, with IR is a little slower. But at least I know the flash will fire. Keep a copy of the old firmware (if you can) and install the new. If you see the problem, downgrade the firmware. I downgraded the firmware with no problem.

PGSONY wrote:


I was researching about this issue and came upon this thread. I have the same issue where I can't focus in a reception hall using a 5dm3 & 600ex rt.. It is sometimes so slow that I end up missing very important shots. A lot of websites are saying to install the new firmware, but now I am worried this firmware update will make it worse after reading the comments above. Has there been any more updates since then? Should I try to update -- I don't want to be in a worse situation after the update.


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