Canon 20mm f/2.8 USM

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The Canon 20mm f/2.8 USM is a moderately fast wide-angle prime designed for Canon EF-mount DSLRs. Key features include:

Angle of View	94º
Aperture	f/2.8-22
Autofocus	Autofocus
Brand	Canon
Compatibility	Crop and Full Frame
Diameter	3.05"
Dimensions	Length: 2.78"
Filter Size	72.0mm (nonrotating front element)
Filter Style	nonrotating front element
Focal Length	20.0-20.0
Focusing System	Rear focusing, nonrotating, USM motor, full-time manual
Groups/Elements	9/11
Hood Included	No
Image Stabilization	No
Item Type	Lens
Lens Type	Wide Angle
Low Dispersion Elements	1
Max Aperture	2.8
Maximum Magnification	.14x
Minimum Aperture	22.0
Minimum Focusing Distance	0.82feet
Mount	Canon EF
System	Canon
Weather Resistant	No
Weight	0.89 lb
Zoom Method	NA