Canon EF 400mm f/4 DO IS II USM Lens

Model #8404B002

USA Version
Canon 8404b002 1
Canon 8404b002 1
Canon 8404b002 3
Canon 8404b002 2
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Weight 4.63 lb (2.1 kg)
Dimensions (DxL) Approx. 5.04 x 9.16" (128 x 232.7 mm)
Filter Thread Drop-in:52 mm


Format Compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)
Angle of View 6° 10'
Minimum Focus Distance 10.83' (3.3 m)
Magnification Not Specified By Manufacturer
Focal Length 400mm
Diaphragm Blades 9, Rounded
Elements/Groups 18/12
Aperture Maximum: f/4
Camera Mount Type Canon EF


Autofocus Yes
Image Stabilization Yes
Expert Reviews
The digital picture.32823291
18 September 2014

Is the Canon EF 400mm f/4 DO IS II USM Lens right for you? Learn all you need to know in's review!

2 February 2015

Specification A professional-grade telephoto lens, which sports a moderately fast maximum aperture of f/4, image stabilisation, silent focusing with full-time manual focus override and a relatively compact design, thanks to the use of Diffractive Optics.

User Reviews
B h photo.32817553
24 October 2015

I am a professional who has been in the business 40+ years. I've used a lot of different big glass over this time period. I recently bought and used the 400 f4 for a week long assignment on Polar Bears on the North Slope of Alaska. Needed something I could easily manage and hopefully handhold.

  • +

    Consistent Output, Fast / accurate auto-focus, Good contrast and color, Strong Construction, Very Sharp

1 February 2015

OMG!!! I love this lens. It was a splurge but well worth it if you are going to photograph animals, birds in the their natural habitat.

Product Highlights
  • EF Mount Lens/Full-Frame Format
  • Gapless Dual-Layer Diffractive Optics
  • Large Diameter Aspherical Element
  • Ultra Low Dispersion Element
  • Protective Fluorine Coatings
  • Ultrasonic AF Motor and Internal Focus
  • Optical Image Stabilizer with 3 Modes
  • Power Focus Mode; Full-Time MF Override
  • Dust- and Water-Resistant Construction
  • Rounded 9-Blade Diaphragm
Average Expert Score
Average User Score
In The Box
  • Canon EF 400mm f/4 DO IS II USM Lens
  • ET-120W II Lens Hood for EF 300mm f/2.8L IS II
  • E-145C Lens Cap for EF 300mm f/2.8L IS II USM
  • Lens Dust Cap E (Rear)
  • Lens Wide Strap B f/EF 300 / 400 mm f/2.8L IS II USM
  • 52mm Drop-in Gelatin Filter Holder (Black)
  • Lens Case 400D for EF 400mm f/4 DO IS II USM
  • Strap for Hard Case
  • Limited 1-Year Warranty
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