Canon
EF 40mm f/2.8 STM
Pancake lens
Canon's latest pancake 40mm lens features the STM technology which provides quiet, smooth and continuous autofocus during video operation. A bright and fast aperture at f/2.8 extremely compact lens at less than 1" long. Optimized coatings in the construction reduces ghosting and flare. Becomes 64mm equivalent if used on APS-C size cameras.