Ron789
Subscriber
On 35mm I only shoot with 50 mm. I tested quite a few lenses myself and found that at large openings there are significant differences. At F/8 the differences are marginal but for some lenses still noticable under optimal conditions (FP4 plus, tripod etc.). Based on my own testing, I found Nikkor 50 F/2 and Canon 50 F1.4 rather disappointing, to my surprise. Canon 50 F/1.8 and Minolta 50 F/1.7 perform better. But my absolute favorite is the Carl Zeiss Ultron 50 F/1.8, the one with the concave front element. Astonishing sharpness, yet a nice soft image and superb bokeh. Other Carl Zeiss lenses, like Tessar F/2.8 perform nice as well but nowhere near the Ultron. I've never tried a Summicron 50 F/2, but I believe that one is in the same league as the Ultron.... rather expensive though.