Your guide to Canon camera and lens reviews

Canon EF 20mm f/2.8 USM

Canon EF 20mm f/2.8 USM Specifications
Frame Coverage 35mm
Lens Construction (groups) 9
Lens Construction (elements) 11
No. of Diaphragm Blades 5
Minimum Aperture 22
Closest Focusing Distance 0.25m (9.8")
Maximum Magnifcation 0.14x
Filter Diameter 72mm
Maximum Diameter x Length 77.5mm x 70.6mm (3.1" x 2.8")
Weight 405g (14.3oz)
If all you can afford is the Canon EF 20mm f/2.8 USM Lens, buy it and enjoy it. It will capture memories just fine.
As a wide-angle lens for cropped sensors, this lens falls a little short, with virtually all of the standard zooms giving a wider angle of view. However, on the full frame sensors that Canon are now producing, this lens still warrants its place in their line-up.
William Castleman
The EF 17-40mm f/4L lens is a very sharp, high contrast zoom lens with performance characteristics that often match and sometimes exceed those of quality prime lenses at wide angle.
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