By "Mark II" do you mean a 1Ds2 or 1D2? I'm guessing you chose the 1Ds2 (or 1D2) for the speed (time between shot to shot). I ask because I'm considering a P25 on a Mamiya AFD. I'm in the "information gathering" phase and trying to get a feel for -
1) how much real-world DR there is with P20, P21 or P25 vs the 1Ds2
2) how does the resolution compares from a P20 cropped to the same a 1Ds2 image (and up rez'd to a 1Ds2 file size)
Digital Transitions has a Dallas office and I plan to try an AFD-II with a P20 and P25 along with a 1Ds2. Then I'll go home and edit my heart out! But I do NOT want to do this too soon, because I'll probably be weak and buy the back based on the "ooooh ahhhhh" factor. Also with PMA around the corner, it's worth while to wait for a month or so.