Question: are ef s lenses cropped?
Answer: Canon APS-C cameras have a 1.6x crop factor, meaning that a 50mm EF-S lens will behave like an 80mm lens would on a 35mm camera. ... Because the image sensor on Canon APS-C cameras is 1.6 times smaller than a 35mm camera, you multiply the listed focal length of the lens by 1.6 to determine its equivalent.