Summaron 35mm 3.5 vs 2.8 vs Summicron ASPH
Summaron 35mm 3.5 vs 2.8 vs Summicron ASPH
I had both lenses at one time. The 3.5 had haze cleaned out of it by Gus Lazzari. The 2.8 was overhauled by the seller in Japan before it was shipped to me. Both seem to have no visible distortion.
For a long time, I had problems with flare with the 3.5, even after the haze cleaning. It was very susceptible to backlighting. Then I tried it without the A36 uncoated Leitz UV filter, and it was a revelation! (Yes, I know that this should have been obvious, but I was duhhh). Both lenses seem sharp wide open and just get sharper as you stop down.
With the 2.8, I noticed that there is significant light fall-off into the corners wide open. Depth of field is slightly shallower on the 2.8 vs the 3.5. I didn't do a direct comparison between the two lenses, but looking at Erwin Put's information, it does seem that the 2.8 version is sharper. Maybe not as sharp into the corners wide open as the 35mm f/2 Summicron ASPH that I had in LTM, but very decent. I think that the Summicron ASPH had less vignetting too. But the ASPH was very heavy in chrome, and way too expensive/collectible to use on a regular basis. So, the ASPH got sold.
Once you get a SOOGZ adapter and 39mm screw on lens hood on the 3.5, it becomes a rather bulky lens. Also, I found the ergonomics of the lens a bit difficult. So, it was sold off too. At this time all I have is the Summaron 2.8 in LTM.