Canon EF 400mm f/2.8L IS USM lens

Canon EF 400mm f/2.8L IS USM lens

Canon EF 400mm f/2.8L IS USM lens is a super telephoto standard lens with long aperture f/2.8 for numerous professional nature and sports photographers. The 400mm USM super telephoto lens features latest image stabilization technology with an average weight (11.8 lb / 5.37 kg), superior handling and super fast AF speed among all 400mm f/2.8 lenses. This super telephoto lens weighs 10 g more than the Canon EF 600mm f/4.0L IS USM lens and 3.3 lbs heavier than the Canon EF 600mm f/4.0L IS USM lens. The lens attributes superb color balance, an excellent contrast and superior optical quality. The barrel and external parts of the Canon EF 400mm f/2.8L IS USM lens are made of magnesium alloy. The lens offers superior moisture and dust proof performance. Distortion level is very low as well as vignetting and chromatic aberration (CA) is very well controlled. The lens has 2 UD glass elements and 1 fluorite element to get rid of secondary chromatic aberration and employs high contrast and high resolution.

The Canon EF 400mm f/2.8L IS USM lens  features a ring type USM (Ultra Sonic Motor) and an advanced AF drive algorithm that make the autofocus speed much better or fastest in the world with EOS – 3 and EOS – 1v. The full – time manual focus exits in this 400mm zoom lens. The lens has focus preset and AF stop attributes same as the Canon EF 300mm f/2.8L IS USM lens. The lens has unique lens composition of 13 groups containing 17 elements with 1 flourite element and 2 Ultra – low dispersion (UD) elements. Just like its other siblings in 400mm f/2.8 lineup, it does not extend throughout focusing and zooming range.

Released in 1999, the Canon EF 400mm f/2.8L IS USM lens performs well with Canon Extenders and offers an excellent image quality. The zoom lens becomes Canon EF 800mm f/5.6 lens and Canon EF 560mm f/4.0 lens by using 2x Extender and 1.4x Extender respectively. With a minimum focusing distance of 9.8 ft / 3 m and maximum magnification of 0.15x, the lens shows best results in image sharpness, an excellent bokeh (background blur quality) and Image Stabilizer (IS). The EF 400mm USM lens supports DI (Drop In) 52 mm filter size.

Specification of   Canon EF 400mm f/2.8L IS USM lens

  •                 Name – Canon EF 400 mm f/2.8L IS USM Lens
  •                 Release Date – 1999
  •                 Image Circle – 35 mm
  •                 Focal Length Range – 400 mm
  •                 Camera Mount Type – Canon EF
  •                 Lens type – telephoto Prime Lens
  •                 APS Equivalent – 640 mm
  •                 Horizontal angle of view – 5°10′
  •                 Diagonal angle of view – 6°10′
  •                 Vertical angle of view  – 3°30′
  •                 Focus Motor Type – Ring – type Ultrasonic Motor, Full – time manual focus
  •                 Lens construction – 13 groups / 17 elements, 1 Fluorite element, 2 UD (ultra

Low dispersion) glass elements

  •                 Maximum Magnification – 0.15 x
  •                 Minimum focusing distance –  3 m (9.8 ft)
  •                 Maximum Reproduction Ratio – 1:6.7
  •                 Aperture Range – f/2.8-32
  •                 Number of Aperture blades – 8 (circular)
  •                 Maximum aperture – f/2.8
  •                 Minimum aperture – f/32
  •                 Manufacturer Specification Weight – 11.8 lbs (5.37 kg)
  •                 Maximum Length at Full Extension – 14.11 inches
  •                 Focus Adjustment –  Rear focusing system with USM (Ultrasonic Motor)
  •                 Filter Size – 52 mm
  •                 Image Stabilization – Yes
  •                 Dimensions – 163 mm (diameter) x 349 mm (length) (6.4 inches x 13.7 inches)\
  •                 Size of rings – 3.48 inches (Focus)
  •                 Format Compatibility – 35 mm film / full – frame Digital Sensor Canon (APS – C)

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