I am fortunate enough to get both the 85 1.2 (version1) and 50 1.2 at pretty good price (3.3K+ for 2 lens). Frankly, my assessment is 85 1.2 is so far the sharpest and most amazing lens I had so far, even with the slow focus. I had some struggle with 50 1.2 at the start, and I sent it to Canon Service Center for a calibration, and had a 1-1 session with the Specialist to help tailor the AF adjustment to suit my camera and shooting style. After the adjustment, the result is much improved.
The absolute sharpness is still not as high as 85 1.2, but it definitely sharper then the 50 1.4. The challenge is really on the shallow depth of field you get with the f1.2 . I can't imagine how that will be like with the Noctilux f0.95... Anyway, you tends to give certain impression that the image is soft, if the point of focus couldn't bring up a clear 'point of focus' compare to the rest of the scene.
There are some CA that's observed as well, if you shoot a white on black text at 45%, text away from focal pt and text near towards focal pt will shows different hue of magenta/cyan (can't remember the sequence). However, in daily application, this never appear as an issue at all since I use this mainly for portrait.
All in all, I think this lens is not perfect (maybe my copy is not perfect), but if you're looking for the best 50mm EF lens, this will be it. I'm waiting to test this with the new 5DII....
So with the first example image seen further up, do you think it is an extremely shallow DOF, or is there really a certain softness that I am seeing.
With the second photo, I can see a clear point of focus, but not with the first. :dunno: