The Canon EF 200-400mm f/4L IS USM Extender 1.4x is a telephoto zoom lens with a built-in 1.4x extender which boots the focal lengths to 280-560mm. The 4-stop Image Stabilizer technology maximimes the sharpness by speeding up the shutter by up to four stops longer than usual without camera shake. The optical design of this lens includes bith fluorite and Ultra-Low Dispersion lens elements which helps to minimise chromatic aberration and eliminates colour blurring.
This lens features a ring-type ultrasonic AF motor which ensures almost silent autofocusing. Full-time manual focus override, focus-stop and focus-preset controls on the lens barrel. Power Focus is also available for when shooting EOS Movies. The EF 200-400mm lens uses magnesium allow which not only adds strength and durability but protects against dust and moisture from reaching inside the lens. The fluoride coatings ensures that the lens elements are easy to clean.
|Angle of view (horizontal, vertical, diagonal)||
10° - 5°10', 7° - 3°30', 12° - 6°10'
with extender 7°20' - 3°40'', 4°55' - 2°25', 8°50' - 4°25'
|Lens construction (elements/groups)||
25/20 (33/24 with extender)
|No. of diaphragm blades||
32 (45 with extender)
|Closest focusing distance||
0.15x (0.21x with extender)
52mm drop in
|Max. diameter x length||
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