40D AF with f/8 max aperture?

Started Aug 20, 2007 | Discussions thread
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macshark
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40D AF with f/8 max aperture?
Aug 20, 2007

It would be interesting to see how the new AF system in 40D copes with max aperture of f/8. The most common case is a 1.4x TC on a f/5.6 lens, which is used by many wildlife photographers on this site.

Looks like Phil already has a 40D in hand. Would it be possible to include AF results at f/8 (with a reporting TC and a non-reporting TC) in the 40D review?

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