Your Rokkor is exceptionally sharp at f/1.2. Mine is that sharp at distances of 4 feet and further, but up close, it has quite a bit of coma that reduces resolution a fair amount (though still acceptable). At f/2, mine is significantly sharper up close (and really it doesn't improve much from f/2, because it's at such a high level.), though the improvement at medium distances isn't as drastic since it performs so well further away.
ulrikft, What's the serial number on yours? There has been some discussion about the earlier production with radioactive element and later ones. It seems that the older 200xx....serial number with scalloped metal focusing ring are sharper. I suspect your is from the earlier run too. Mine is also 200xx.... Its currently glued on my camera.
Oh the mighty sharpness test which I rarely do anymore
This is how mine resolves in the center, focus on letter "E", DOF is extremely shallow on f1.2 shot, letters "C" and "p" already OOF.
Hi.
Just want to post a big thanks to Cogitec and all others who have opened my eyes to this wonderfull lens. Just ended sandig to get infinity. Would'nt have dared without the precise how to, thanks again....
Best regards
