Canon 20-35mm f3.5-4.5 USM is an Auto Focus (AF) Wideangle Zoom
lens with 35mm FF max sensor coverage and it is designed to be used with Canon EF mount cameras.
Canon 20-35mm f3.5-4.5 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 20-35mm f3.5-4.5 USM is 35mm FF
Canon 20-35mm f3.5-4.5 USM has a focal range of 20-35mm and 1.8X zoom ratio. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 32 - 56mm.
Optical Image Stabilization
Canon 20-35mm f3.5-4.5 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 20-35mm f3.5-4.5 USM is available in Black color.
Canon 20-35mm f3.5-4.5 USM features Rotary (internal)
zoom method where the length of the lens doesn't change while you are zooming in or out. Even though this design has a size disadvantage in general compare to extending designs, it has the benefits of better sealing against dust and moisture, no zoom creep and no weight balance shift while zooming.
Maximum Magnification Ratio
Canon 20-35mm f3.5-4.5 USM has a Max Magnification Ratio of 0.13x
and has a minimum focusing distance of 0.34m
Canon 20-35mm f3.5-4.5 USM is a variable aperture lens with a max aperture of f3.5 and a minimum aperture of f22 at 20mm, and a max aperture of f4.5 and minimum aperture of f27 at 35mm .
Canon 20-35mm f3.5-4.5 USM's optical formula consists of 12 elements in 11 groups.
**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.