Nick and Mark, thanks for taking the time (and inevitable flak) for writing this report. I do find it interesting that most of the respondents so far are more concerned with the Canon and Leica than the Phase and Pentax! Nick, if you haven’t used one of the manual focus A 645 lenses, I would encourage you to do so. Not only may the A lenses solve the “quantized” or stepwise focus problem you mentioned in a previous report, but they also feel much better in the hand. I have a couple of 645 lenses in the A and FA versions; the lenses may be identical in optical performance but the FA versions lost a lot of solidity with the addition of AF. I much prefer the A 120mm macro over the FA version. The focus ring is remarkably solid and precise; additionally, the lens hood is integral rather than the reversing plastic one with the FA. As a side note: I’ve used that lens a great deal and as tempting as it is to use f16 to increase DOF, diffraction is really taking a toll at that point.