Canon 100-300mm f4.5-5.6 USM is an Auto Focus (AF) Telephoto Zoom
lens with 35mm FF max sensor coverage and it is designed to be used with Canon EF mount cameras.
Canon 100-300mm f4.5-5.6 USM is compatible with cameras that have Canon EF lens mount.Some of the latest released cameras with Canon EF lens mount are Canon 1D X III
, Canon 6D MII
and Canon 5D MIV
Max sensor coverage of Canon 100-300mm f4.5-5.6 USM is 35mm FF.
Canon 100-300mm f4.5-5.6 USM has a focal range of 100-300mm and 3.0X zoom ratio. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 160 - 480mm.
Optical Image Stabilization
Canon 100-300mm f4.5-5.6 USM doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Canon 100-300mm f4.5-5.6 USM is available in Black color.
Canon 100-300mm f4.5-5.6 USM features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Canon 100-300mm f4.5-5.6 USM is a variable aperture lens with a max aperture of f4.5 and a minimum aperture of f32 at 100mm, and a max aperture of f5.6 and minimum aperture of f38 at 300mm .
Canon 100-300mm f4.5-5.6 USM's optical formula consists of 13 elements in 10 groups.