The EF 20mm f/2.8 USM Lens from Canon is an ultra-wide-angle lens with a fast maximum aperture for full frame EF mount cameras. A floating rear focusing system gives nice images at all subject distances and an ultrasonic motor (USM) enables fast, smooth and quiet autofocus. Full-time manual focus override allows for precise manual focus even when in AF mode. The minimum focus distance is 9.8".
High-contrast images and minimized aberrations result from the lens' optical construction which includes aspherical and Super UD lens elements. Canon's Super Spectra lens coating suppresses ghosting and flare by absorbing light that might otherwise reflect off the camera's sensor. A metal front barrel- including filter ring and lens hood mount- provides durability and a stable hold for those optional accessories.
Specification
General
Length2.8 in
Diameter3.1 in
Weight14.3 oz
Lens System
TypeWide-angle lens
Special FunctionsWide angle
Intended For35mm SLR, digital SLR
Focal Length20 mm
Lens ApertureF/2.8
Minimum ApertureF/22
Magnification0.14
Min Focus Distance9.8 in
Focus AdjustmentAutomatic, manual
Max View Angle94 degrees
Lens Construction9 group(s) / 11 element(s)
Filter Size72 mm
Diaphragm Blades5
Mounting TypeCanon EF
FeaturesInternal focusing system, Ultrasonic Motor (USM), full-time manual focusing, floating system, rear focusing system
Miscellaneous
Included AccessoriesDust cap, lens cap
Compatibility Information
Designed ForCanon EOS
Universal Product Identifiers
BrandCanon
Part Numbers2509A003, 2509A010, EF2028U
GTIN00082966212888, 00829662128880
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