FEATURES
01
The filter thread is 58mm and the hood (ES-71 II) is optional.
02
Unlike the Canon 40mm and 50mm f/1.8 lenses, this one features a focus distance scale.
03
Full-time manual override of autofocus is unusual in a non-ring-type ultrasonic system.
04
The well-rounded aperture has eight diaphragm blades.
05
The metal mounting plate doesn’t feature a weather-seal.