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 ...

佳能EF 50mm F1.8 STM镜头，是佳能推出的一款高性能定焦镜头。该镜头采用STM步进式马达技术，在拍摄照片和视频时都能实现快速、精准的自动对焦。其光学结构沿用了之前50/1.8 II的设计，由5组6片组成，虚化效果出色。 在参数方面，这款镜头的最大光圈为F1.8 ...

The workhorse lens in my collection is also my least expensive lens, and the one I've had the longest. It's the Nikon 50mm f/1.8 prime lens. It retails now at $100-$200, but when I purchased it ...