there is no discussion DSLR or DMF anymore....the difference between 35mm and MF (6x6, 6x7 and up) was very obvious in a 11x14 print, sometimes even an 8x10....there is nobody around who can tell if a 8x10 was shot with a 5DII or a P65.....a 16x20 is a different story.....on the other hand sometimes a 20x30 print from 35mm looks amazing....and there are people who claim to print 20x30 from M8 files that look amazing, but my own experience does not agree with that one....
with film, i only shot MF....the look, the quality....always hated 35mm, especially for fashion.....
with digital there is no reason to shoot DMF anymore...the workflow, the files, the detail, the ease of shooting...everything in favor of DSLR....and it only gets better....the differences are getting smaller and smaller and it is harder foe DMF to stay on top by simply adding pixels.....
for fine art prints there are no rules anyway....a 30x40 beautifully detailed print from a P65 can be worth a lot less then a 50x60 "terrible" cellphone shot by the right artist.....
david hockney nowadays "paints" on his iphone....
workflow is the BIG difference between the "formats" these days....
with film it was faster to shoot MF in studio then 35mm....manual focus was easier with the large, bright finders and it was faster to switch the film backs then to load film and it was always strange to switch camera and lens (have the assistant hand a new body with the same lens)...something strange about that....
with digital it is WAY easier to shoot DSLR....AF, handling, speed....workflow that actually works....
the only thing that would make me shoot DMF again (for things i shoot with DSLR) would be a 6x8 sensor with 14stops DR, 16bit, 30mpix....capture rate 2f/sec, "unlimited" buffer, solid tether that keeps up with these numbers....multi zone AF, in lens shutters.....and useable iso (comparable to canon) up to 3200 (because the lenses at that size are a lot slower and DOF is so much more shallow).....
this would have to be a body solution since there is no system on the market! even supporting 6x8 anymore.....
the only companies that can even come close to this (all stats other then sensor size) are canon nikon....
the size jump from 35mm to 645 is just not worth giving up everything else....