The Canon EF 400mm f/5.6L USM is a high-performance super-telephoto lens with UD-glass elements that can result in sharp pictures from corner-to-corner. (The sample photos are copyrighted by the owner. You may click at the thumbnails and see the original pictures.)

Focal Length 400mm
Maximum Aperture f/5.6
Angle of View 6°10'
Focus Adjustment Inner focusing system with USM
Closest Focusing Distance 3.5m / 11.5 ft.
Filter Size 77mm
Max Diameter x Length 3.5" x 10.1" / 90.0 x 256.5mm
Weight 2.8 lbs. / 1250g
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Sample Videos

Canon EF 400mm f5.6L USM lens review
Canon EF 400mm f5.6L USM video