Mark III AI-Servo test on static subject

Started Jan 10, 2008 | Discussions thread
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Scott Larson
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Mark III AI-Servo test on static subject
Jan 10, 2008

If you put your blue dot/submirror-replaced Mark III on a tripod, set the AF to AI-Servo and continuously focus on a static object (a paint can for example), does your focus shift around like mine does?

Is this even a valid test? I'm trying to qualify my AI-Servo problems some more before I send it to Canon again.

 Scott Larson's gear list:Scott Larson's gear list
Canon EOS-1D Mark III Canon EOS 5D Canon EOS 5D Mark II Canon EOS-1D Mark IV Canon EF 50mm f/1.4 USM +11 more
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