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The EF 200–400 mm 4L IS USM Extender 1.4× is an
Lens overview from Canon USA
Canon 200-400 6 Month TestComparison with several other super-telephoto lenses by LensRentals.comCanon EF 200–400 Lens review by Bryan Carnathan
{{DEFAULTSORT:200-400mm lens Canon EF lenses Canon L-Series lenses Camera lenses introduced in 2013
EF mount
The EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled by a dedicated electric motor built into the lens. Mechanically, it i ...
super telephoto
A telephoto lens, in photography and cinematography, is a specific type of a long-focus lens in which the physical length of the lens is shorter than the focal length. This is achieved by incorporating a special lens group known as a ''telephoto ...
zoom lens
A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed-focal-length (FFL) lens (see prime lens).
A true zoom lens, also called a parfocal lens, is one ...
produced by Canon. It is part of the professional L-series and functions with the Canon EOS line of cameras. The EF 200–400 mm lens features an ultrasonic motor, image stabilization
Image stabilization (IS) is a family of techniques that reduce blurring associated with the motion of a camera or other imaging device during exposure.
Generally, it compensates for pan and tilt (angular movement, equivalent to yaw and pit ...
and weather sealing. It is the first and only EF lens with a built-in extender.
History
The EF 200–400 mm 4L was first announced to be in development in February 2011 and a prototype was showcased at the 2011 CP+ tradeshow. In November 2011, Canon announced that availability of the lens would be postponed to an unspecified later date. The lens was only released more than a year later in May 2013.Built-in 1.4× Extender
Although not the first lens to be equipped with a built-in teleconverter, an honor that belongs to the older Canon FD mount 1200 mm 5.6L 1.4× lens, the EF 200–400 is the first to be for the EF mount, and the first to enter mass production. The extender, when engaged, increases the lens' focal length by a factor of 1.4×, while decreasing the aperture by a single stop, changing the lens to a 280–560 mm f/5.6 lens. The extender is activated and deactivated by a mechanical switch close to the lens mount.Specifications
See also
* Sigma 200–500mm f/2.8 EX DG lensReferences
External links
Lens overview from Canon USA
Canon 200-400 6 Month Test
{{DEFAULTSORT:200-400mm lens Canon EF lenses Canon L-Series lenses Camera lenses introduced in 2013