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Old Feb 25, 2009, 8:18 PM   #20
JimC
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Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,378
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AF Tracking is an interesting subject.

Here's a thread about a test in a magazine using an approaching vehicle to test AF tracking:

Magazine Review: K20D/SDM AF.C performance vs. 8 competitors

Here's a thread that shows some AF speed tests (without taking tracking into consideration).

http://forums.steves-digicams.com/fo...834743#p834743

Disclaimer... I use a Sony A700 right now, so I may be a bit biased in that direction. ;-)

There should be a way to compare AF tracking in a wider variety of conditions, if you could take photos using multiple camera models in a controlled manner and calculate the number of keepers from a large group of images to see what works best for a given subject/movement type. It would be a lot of work to do it though (and you'd probably see a lot of variation based on subject type, lenses used, etc.).


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