My 5D Mk II consistently out-performs my 7D at AI Servo Focus!

Started Nov 25, 2010 | Discussions thread
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glenandrew Regular Member • Posts: 148
My 5D Mk II consistently out-performs my 7D at AI Servo Focus!

The main reason I bought a 7D was that I thought it would perform better in AI Server autofocus mode, for motorcycle racing, than my 5D MKII. After 4 months and many thousands of photos of motorcycle racing, mostly using the new 7D, I find after many tests that my 5DMKII is slightly better. The lenses I use are the 200mm F2.8LII, 300mm F4L (IS and non-IS versions - trying to decide which to keep), 400mm F5.6L.

With both the 7D and 5DMKII I use only the central point region and keep the subject in the centre.

I have owned 300D, 350D, 20D, 5D, 5DMKII, 7D and other film cameras. I have been a keen motorcyclie racing photographer for over 35 years.

Your suggestions and advice will be much appreciated. I have not attempted to list all my settings for the 2 cameras - I will if I need to. Anyone else had similar issues and did you find any way to make the 7D perform better? By all accounts it should.

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