Canon EF 400mm f/2.8L IS USM

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Lens Specifications
Name Canon EF 400mm f/2.8L IS USM
Image Circle 35mm
Type Telephoto Prime
Focal Length 400mm
APS Equivalent 640mm
Max Aperture f/2.8
Min Aperture f/32
Diaphragm Blades 8
Lens Construction 17 elements in 13 groups, including 1 flourite and 2 UD elements
Diagonal Angle of View(Based on image circle) 6.2 degrees
Focus Details Inner focusing; full-time manual focus and USM
Front Element Rotation No
Zoom System n/a
Closest Focus 3m / 9.8 ft.
Magnification Ratio 0.15x / 1:6.7
Filter Size 52mm Drop In
Dimensions(Length x Diameter) 349mm x 163mm / 13.7 in. x 6.4 in.
Weight 5.37kg / 11.8 lb
Notes Image Stabilization
Typical Online Price US$6500