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| p.1 #1 · S-L-O-W focus lock in low light with the 5d3 |
**Sorry if this has already been discussed**
When the 5d3 first came out, a number of people (myself included) noted that it was taking quite a while to lock focus in low light. I asked Canon about this but there was no reply on the point really...
Anyway. I think I've worked out what it is and thought this was useful info for others.
I didn't originally realise, but the new 600 flash from Canon contains a new focus assist light designed for the new AF sensor. It wasn't something that was heavily publicised. So I thought I'd do a quick test over the weekend with my 580EXII to see what happened if I turned off the focus assist on the flash and suddenly it was really snappy at acquiring focus again. So it's the focus assist that's the problem. In fact, I've found using the outer focus points with the 580exii focus assist gives really unpredictable focus results.
I've not got one of the new flashes yet but at the moment I *presume* this will solve the problem. If anyone else has one I'd be interested to hear their experience?
Hope this helps someone...