Central sharpness is very good at f/1.8 and f/2, excellent from f/2.8 through to f/5.6, very good from f/8 to f/16 and fair at f/22. The edges are good at f/1.8 and f/2, very good from f/2.8 to f ...

It has a smaller 49mm filter thread and improved build quality over Canon’s older EF 50mm f/1.8 II, but produces results of similar quality. Stopping down from f/1.8 to f/2.8 improves sharpness ...