I borrowed my brother's Leica 50mm f/0.95 Noctilux today to do a quick comparison with my Mitakon Speedmaster II "Dark Knight" 50mm f/0.95 lens. I shot both lenses on my Sony A7, the Mitakon natively, and the Leica using an adapter. The lenses are similar in weight and size: It was freezing and overcast here in Boston, MA. I only had about 30 minutes to shoot, so I looked for still test subjects, not artistic compositions. Processing was done using default settings from Capture One Pro 8.1. I'll make the RAW files available in the second post. Each image presented below is resized with a 100% crop showing the area of focus. I'll leave the conclusions to the viewer without further commentary. Update: Full-resolution JPEGs and RAW files for download can be found in the second post in this thread. Full-resolution JPEGs - Control-click (Command-click on a Mac) on these in a tabbed browser to compare full screen by switching tabs: Leica @ f/0.95: https://farm8.staticflickr.com/7513/16258449362_4fe2f82315_o.jpg Mitakon @ f/0.95: https://farm8.staticflickr.com/7517/15639375503_b9afb1ddb9_o.jpg Leica @ f/0.95: https://farm9.staticflickr.com/8632/16259274255_6eb2f03b3a_o.jpg Mitakon @ f/0.95: https://farm9.staticflickr.com/8609/16257450981_cf88fae037_o.jpg Leica @ f/0.95: https://farm8.staticflickr.com/7503/16257450861_9258763dff_o.jpg Mitakon @ f/0.95: https://farm9.staticflickr.com/8666/16073422017_73bd5ff897_o.jpg Leica @ f/0.95: https://farm9.staticflickr.com/8587/16073421957_6066430dfe_o.jpg Mitakon @ f/0.95: https://farm8.staticflickr.com/7525/16073136159_bec8158604_o.jpg Leica @ f/0.95: https://farm9.staticflickr.com/8663/15636866524_23fd600737_o.jpg Mitakon @ f/0.95: https://farm8.staticflickr.com/7512/16259273265_0a167acda9_o.jpg Leica @ f/4: https://farm9.staticflickr.com/8661/16259273545_7f8f5a8121_o.jpg Mitakon @ f/4: https://farm8.staticflickr.com/7517/15639374143_1718362388_o.jpg RAW files for download: Mitakon-Noctilux.zip The A7 meters the Noctilux as being about 1/3 stop faster (eg, 1/400s for Leica vs 1/320s for Mitakon with both lenses wide open) though the Mitakon seems to have less light falloff wide open.