1D Mark IV single-line sensitive with 400 5.6 prime?

Started Apr 21, 2010 | Discussions thread
GazzaJagman
Senior MemberPosts: 2,217
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Re: 1D Mark IV single-line sensitive with 400 5.6 prime?
In reply to ofashman, Apr 23, 2010

I tried this with a 40D and there seemed to be a deliberate attempt by Canon to stop the centre point from working. There's also a world of difference between "working" and "usable".

I've noticed that the contrast detect AF on the 7D is a lot faster than other older cameras....it's also not effected by the f8 restriction

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Gareth Cooper
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