Introduction The EF-M 22mm f/2.0 STM is a moderately wide-angle fixed focal length lens with the equivalent field of view to that of a 35mm lens and is an attractive option for reportage, street and landscape photography. As with others in the EF-M range it adopts the firm’s new linear stepper motor technology for discreet refocusing using both CD and PD AF during video-capture. It also features slim aluminum barrel measuring just 23.7mm long with a full-time manual focus collar and yet still finds room for a relatively complex construction with 7 elements (one with an
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