Remember that autofocus fix that Canon was supposedly working up? Turns out, the company isn't quite ready to start accepting faulty EOS-1D Mark IIIs just yet, but it is shipping out upgraded versions to new buyers. Rob Galbraith managed to wrap his hands around not one, but three of the new DSLRs in order to substantiate his findings, and what he found was noticeable improvement. In summary, the sub-mirror fix was said to boost the performance of the AF, as it enabled the camera to deliver "about the same number of in-focus frames whether it was warm or cold." Unfortunately, it seems that the solution still left a lot to be desired; Mr. Galbraith noted that it still couldn't match the EOS-1D Mark II N, and implied that there was still room for betterment. 'Course, we're really just scratching the surface on his thorough (and we mean thorough) look at the sub-mirror fix and v1.1.3 firmware, so if this issue has been hounding you, do yourself a favor and check out the read link.