Photographic lens recognition

General regulations

1, aperture mark: F2.8, aperture values will be different for different sizes; 2. Focus mark: 16-35MM 3, ZOOM means zoom 4, EF means Canon camera lens mark 5, EF-S means Canon half-frame lens 6, TS-E lens means shift lens 7, EF-M means EOS-M series special lens 8, and RF lens is suitable for Canon. L-class lens, also known as red circle lens 10, USM indicates that the lens IS equipped with ultrasonic motor 1 1, STM indicates that the lens is equipped with stepping motor 12, IS indicates that the lens is anti-shake, that is, anti-shake lens 13, and II/III indicates which product the lens is/kloc-3.

Nikon

1, AF: indicates that the lens supports body-driven autofocus 2, AF-I: indicates that the lens is equipped with focus motor 3, AF-S: indicates that the lens is equipped with SWM focus motor 4, d: indicates that the lens has aperture ring design 5, g: indicates that the lens is controlled by the body to adjust the aperture 6, e: indicates that the lens has built-in electromagnetic aperture 7, and DX: indicates that it is suitable for Nikon APS-.