Canon EF 400mm f/5.6 L USM Lens

Canon EF 400mm f/5.6 L USM Lens

Canon EF 400mm f/5.6 L USM lens is a high performance and fast autofocus lens specially designed for portability and excellent handling. The Canon EF 400mm f/5.6 L USM lens was introduced in 1993. This super telephoto lens is one of the three popular telephoto 400mm lenses. The field of view of Canon EF 400mm f/5.6 L USM lens on APS – C DSLRs is equivalent to 640mm. The super telephoto lens is compatible with cropped frame SLR and full frame cameras as well as Canon EF 1.4x extender and Canon EF 2x extender. The focusing ring and switches are moisture and dust resistance. The 400mm lens is the most reasonable lens among the all 400mm Canon telephoto prime lenses. The Canon EF 400mm f/5.6 L USM lens utilizes UD (ultra low dispersion) glass elements to offer an amazing optical performance even wide – open. The lens has minimum focusing distance of 3.5 m / 11.5 ft and maximum magnification of 0.12x. To improve fast AF (autofocus) speed, the Canon EF 400mm f/5.6 L USM lens features focus limiter switch that provides 2 modes, first mode allows 3.5 m to infinity focusing and second mode allows 8.5 m to infinity focusing.

The Canon EF 400mm f/5.6 L USM lens presents inner focusing and a ring – type USM (ultra – sonic motor) to obtain fast, quick and silent autofocus. Full time manual focus is enabled. High contrast, color balance and saturation are brilliant. An eight blade aperture offers crisp, clear and superb bokeh (background / foreground blur quality). The Canon EF 400mm f/5.6 L USM lens consists of six groups with seven elements including 1 UD (Ultra Low Dispersion) and 1 super UD element. Vignetting and Chromatic aberration (CA) are amazingly very well controlled. The lens is average in weight of 1.25 g / 2.8 lb and also average in size of 90 mm (diameter) x 256 mm (length) when compared to other Canon’s telephoto lenses. The maximum aperture of this L series lens is f/5.6 and accepts 77 mm filter size. The external barrel of the lens is made of metal with rubberized focus ring which is very smooth.

The Canon EF 400mm f/5.6 L USM lens has some similarities with Canon EF 300mm f/4.0 L IS USM lens in terms of weight, max magnification and build quality. The front element of this super telephoto lens does not rotate so it becomes easy to use polarizing filters. The super telephoto prime lens includes a removable tripod mount and a built in hood. The build quality of the lens is no doubt extremely solid and it delivers incredibly sharp picture quality into full frame corners. Horizontal, diagonal and vertical angle of view of this prime lens are 5°10′, 6°10′ and 3°30′ respectively. The lens has a compact focal length range of 400mm and a minimum aperture range of f/32. The telephoto lens is available at low price so this high performance lens is most popular among the all natural and professional photographers.

 Specifications of Canon EF 400mm f/5.6 L USM lens

  • Name – Canon EF 400mm f/5.6 L USM Lens
  • Releasing date – 1993
  • AF (Autofocus) Motor type – Ring USM (Ultrasonic Motor)
  • Lens type – telephoto prime lens
  • APS Equivalent –  640 mm
  • Image circle – 35 mm
  • Format compatibility – 35 mm Film / Full – Frame Digital Sensor Canon (APS – C)
  • Focal Length Range – 400 mm
  • minimal focusing distance – 11.5 ft (3.5 m)
  • Dimensions –   3.5 in. x 10.1 in. (256 mm in length x 90 mm in diameter)
  • Diagonal angle of view – 6°10′
  • Vertical angle of view – 3°30′
  • Horizontal angle of view – 5°10′
  • Lens construction – 6 groups including 7 elements with one UD (ultra – low dispersion) element, one super UD glass element
  • Filter size – 77 mm
  • Focus adjustment – Inner focusing system with USM (Ultrasonic motor)
  • Minimum aperture range – f/32 (long)
  • Maximum aperture range – f/5.6 (wide)
  • Number of aperture blades – 8
  • Manufacturer specification weight – 44.1 oz (1.25 kg)
  • Focus ring Rotation – 150°
  • Maximum Magnification (MM) – 0.12x
  • Lens hood size – 3.55 x 4.04 inches
  • Focusing type – Internal
  • Maximum reproduction ratio – 1:8.3
  • Features – fast autofocus, tripod collar

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