Canon EF 400mm lens

Canon EF 400mm lens

Infobox photographic lenses
name = EF 400mm f2.8/L USM


caption = The Canon EF 400mm f2.8/L IS USM
maker = Canon
feat-is = y
feat-usm = y
feat-sbf =
feat-macro =
feat-special =
type = p
application = Super Telephoto
flength = 400mm
fov =
aperture = f/2.8 - f/32
groups = 13
elements = 17
diaphragm =
close-dist = 9.8' / 2.98m
max-mag = 1:6.6
weight = 11.7lbs / 5.32kg
max-diameter =
max-length = 13.7in / 34.8cm
filter = 52mm (rear)
hood =
case =
av-horiz =
av-vert =
av-diag = 6 °
start = September 1999
msrp = $6800
category = Canon EF lenses

Canon currently manufactures three 400mm prime lenses: the EF 400mm f/2.8L IS USM; the EF 400mm f/4 DO IS USM; and the EF 400mm f/5.6L USM.

The EF 400mm f/5.6L USM is Canon's cheapest 400mm lens; as such, it is a popular choice for amateur wildlife and sports photographers. Being f/5.6, it is relatively slow, making it less useful in early morning or late evening light.

The 400mm f/4 DO IS USM is one of two Canon lenses that make use of diffractive optics (the other is the Canon EF 70-300mm lens.) The use of diffractive optics allows the lens to be significantly lighter than it might otherwise be, but at the cost of some image quality.

The Canon EF 400mm f/2.8L IS USM lens is a fast super-telephoto lens made by Canon Inc. The lens has an EF mount to work with the EOS line of cameras. The lens is widely used by sports and wildlife photographers.

These lenses are compatible with the Canon Extender EF teleconverters.


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