Canon EF 20mm f/2.8 USM

Canon EF 20mm f/2.8 USM

Lens Summary

Brand: Canon
Also Known As: Canon 20mm f/2.8
Lens Type: Prime Lens
Format: Full Frame / FX
Focus: Autofocus
Lens Mount: Canon EF
Release Date: 1992-01-01
MSRP Price: $489 (Check Current Price)
Made in: Japan
Infrared Rating: Poor
Production Status: In Production

Lens Description: Ultra-wide-angle lens for serious applications. Easy to hold and carry at 14.3 oz. (405g). Floating rear focusing system. Sharp images are obtained at all subject distances


Canon EF 20mm f/2.8 USM Specifications

Lens Specifications
Lens Type Prime Lens
Focal Length 20mm
Mount Type Canon EF
Format Full Frame / FX
Compatible Format(s) 35mm Film / Full-Frame Digital Sensor Canon (APS-C)
Compatible with Teleconverters No
Maximum Reproduction Ratio 1:7.1
Image Stabilizer (Image Stabilization) No
Aperture Information
Aperture Ring No
Maximum Aperture f/2.8
Minimum Aperture f/22
Maximum Angle of View (Full Frame format) 94ยบ
Optical Information
Lens Elements 11
Lens Groups 9
Diaphragm Blades 6
Extra-Low Dispersion Glass Elements 11 spherical elements
SWC (SubWavelength Structure Coating) No
Super Spectra Coating No
Focus Information
Focus Autofocus
Built-in Focus Motor Yes
UltraSonic Motor (USM) Yes
Rear Focusing Yes
Minimum Focus Distance 0.25m
Distance Information Yes
Filter Information
Filter Size 72mm
Accepts Filter Type Screw-on
Physical Characteristics
Weather / Dust Sealing No
Mount Material Metal
Tripod Collar No
Dimensions 78 x 71mm
Weight 405g
Other Information
Available in Colors Black

Lens Construction

diagram-20mm-usm

MTF Chart

mtf

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