Recently the EOS-1D Mark III has been the buzz of various Internet discussion forums, but not for the right reasons. Over the last few months a problem with Auto Focus has come to light which causes it to either mis-focus or slightly front or back focus, especially noticeable when tracking a moving subject in Ai Servo mode. Canon has announced that it will make a new firmware release (version 1.0.9) available for download at the end of this month (or if you prefer you can have your camera serviced right now) which is supposed to address at least part of the problem. However some detailed analysis by Rob Galbraith indicates that this firmware isn't the panacea many Mark III owners will be hoping for.

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