You don't have to play with it and test it. Just shoot right away, thinking only about the artistic component. It is lighter than 50/1.2 and even more so 50/1.8. I did not notice differences in shades and color from Canon optics, everything is excellent. At 1.4 it is sharp, fast and accurate, even at distances of 20-25 it highlights an object in space. It sits perfectly in the hands with a hood, is light and compact (I use it with the M5).
New Nikon 18-105mm Vibration Reduction π· Zoom Lens with Auto Focus for Nikon DSLRs
104 Review
Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras
76 Review
Nikon 50mm f/1.8D Lens: Perfect for Nikon DSLR Cameras!
97 Review
Canon EF 50mm f/1.8 II Fixed Lens - Discontinued by Manufacturer
93 Review