Not much between them really. I would give the nod to the Pentax. Looking at the near center area with the green leaf in focus there is more haloing around the leaf in the Rokkor. That same branch looks sharper in the Pentax. But any slight wind might have impacted the results.
Hi Dim.ka,
The lens number is 39464. I was looking at the front element, wherer amber is the only colour no matter what the angle. However, tilting the rear element shows the purple cast as you have shown. I guess it's version II!
Thanks again for the clarification!
george.
So, here is test shot at f1.2 and f2 from three lenses canon fl 55 1.2, mc rokkor 58 1.2 and konica ar 57 1.2 - this time i did not have fl 58 1.2 with me but think i will make the same scene with more lenses soon.
The main stress - has the FL 55 more creamy bokeh over mc rokkor 58?
Focus point about 3 meters at the center of the frame. Images reduced to 6 mpix each.
Canon FL 55 1.2
f1.2
f2
MC rokkor 58 1.2 (slightly moddified with STF treatment)
Very interesting comparison shots.
Thanks again for all your hard work!
I prefer the Rokkor 58 over the Canon FD 55 and the AR 57.
Looking at the head of the stalk of grass near the middle of the shots,
I see much better definition of tones,contrast and sharper than the Canon.
I like the bokeh better too.
The AR 57 comes very close to the Rokkor but I still give the edge to the Rokkor 58 as it is slightly sharper and less ghosting/aberrations and more contrast on those same heads of the grass stalks. I think the boikeh of the Rokkor is just a tad smoother than the AR 57 too. Both the Rokkor 58 and the AR 57 have much clearer range of colors and tone than the Canon as the Canon has that more muddy color look.
Thanks again, great job!
Wayne, thanks for your comments but i should mention once more - this copy of mc rokkor is a bit moddified in a way i did it once with mc rokkor 85 1.7 (https://www.fredmiranda.com/forum/topic/701273/0#6313739), i will have another rokkor untouched and we will see the difference
Ok, thanks for the interesting link. Didn't know it was modified.
Yes, it would be nice to have unmodified Rokkor shots added to the comparison too.
Thanks,
I'd say both Rokkors take the cake in each of their respective groups, if the combination of sharpness, contrast, and smooth bokeh is used as the measure. The MD 50/1.2 has surprised me here.
Very nice job keeping the focus consistent across all samples, Dmitry!
I'd vote for Rokkor 58 and Canon FD 50/1.2L as the two best IMO. I am surprised at how good the Rokkor 50/1.2 is, and how much glow is on the OM 50/1.2 (looks almost like a 55/1.2 in that regard). I wonder how the Pentax 50/1.2 stacks up? I had a K 50/1.2 and now an -A 50/1.2, both were nice. I sold the K so don't have it to compare. The Pentax-A 50/1.2 to me seems to have a bit more bat-wing type inward coma (flare/glow) than the Rokkor, wide open. It's hard to say, but overall I think the Rokkor edges it (at least with my copies of each). I am not sure how much if any sample variation exists in Pentax-A 50/1.2s.
Paul, Ed thanks for your comments. After testing a lot of lenses i would say focal lenght itself is the main factor which gives that smooth look and shows the real difference in a lens drawing - just check any 50mm and 58mm lens. But of course the lens design, glass type and thickness, front/rear group diameter all these features are very important, but simple addition of 5mm or 8mm will make the look smoother. And yes - someone should compare a lot of lenses and say that 58mm mc rokkor is one of the best 58mm f1.2 ever made.
