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

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 TypePrime Lens
Focal Length20mm
Mount TypeCanon EF
FormatFull Frame / FX
Compatible Format(s)35mm Film / Full-Frame Digital Sensor Canon (APS-C)
Compatible with TeleconvertersNo
Maximum Reproduction Ratio1:7.1
Image Stabilizer (Image Stabilization)No
Aperture Information
Aperture RingNo
Maximim Aperturef/2.8
Minimum Aperturef/22
Maximum Angle of View (Full frame or larger format)94º
Minimum Angle of View (Full frame or larger format)62º vertical, 84º horizontal.
Optical Information
Lens Elements11
Lens Groups9
Diaphragm Blades6
Extra-Low Dispersion Glass Elements11 spherical elements
Focus Information
FocusAutofocus
Built-in Focus MotorYes
UltraSonic Motor (USM)Yes
Rear FocusingYes
Minimum Focus Distance0.25m
Distance InformationYes
Filter Information
Filter Size72mm
Accepts Filter TypeScrew-on
Physical Characteristics
Weather / Dust SealingNo
Mount MaterialMetal
Dimensions78 x 71mm
Weight405g
Other Information
Available in ColorsBlack

Lens Construction

diagram-20mm-usm

MTF Chart

mtf

About Nasim Mansurov

Nasim Mansurov is the author and founder of Photography Life, based out of Denver, Colorado. He is recognized as one of the leading educators in the photography industry, conducting workshops, producing educational videos and frequently writing content for Photography Life. You can follow him on Instagram and Facebook. Read more about Nasim here.

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