So far, most of the reviews of Canon's high-end EOS-1D Mark III digital SLR have been highly favorable, as befits a $4,500 camera from the leader of the pack. But this week, Rob Galbraith, one of the privileged few to get an early look at the camera, issued a scathing review of its autofocus abilities.

In a Tuesday post, Galbraith said that under some circumstances, the 1D Mark III's autofocus can have trouble focusing initially on a subject, doesn't track moving subjects well and can lose focus.

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