Upload & Sell: Off
All sorts of factors matter, but the lens DEFINITELY is part of the deal. I think it has to do with micro-contrast, but I'm not really sure. Here are three pics that show a per-lens difference really well. (sadly, a lot is lost when making them small enough for FM posting, the differences in the original TIFFS are huge)
Yes, the sun is slightly different in each, but I see this type of 3D variance in all shots with these lenses. Observe much the front plants stand-out from the rear shrubs. Look at how fine the Planar is, and how obscenely flat the Canon 50/1.4 is. Again, the difference when viewing the TIFFS is much greater.
Just a down & dirty 50mm -ish, f/2.8 test: Planar, Canon, Mamiya 645
Image 378158 not found
Image 378165 not found
Image 378166 not found