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Canon EF 400mm F2.8L IS II USM vs Canon EF 300mm f/2.8L IS II USM

Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.

Verdict at a glance

  • Canon EF 400mm F2.8L IS II USM is faster by 13.5 stops (f/2.8 vs f/300.0), letting in more light.
  • Canon EF 300mm f/2.8L IS II USM is lighter by 1500g.
  • Canon EF 300mm f/2.8L IS II USM goes wider (300mm vs 400mm).
  • Canon EF 400mm F2.8L IS II USM reaches further (400mm vs 300mm).
Specification comparison
Spec EF 400mm F2.8L IS II USM EF 300mm f/2.8L IS II USM
Brand Canon Canon
Mount Canon EF Canon EF
Type Prime Prime
Focal length 400mm 300mm (wider)
Max aperture f/2.8 (faster) f/300.0
Released 2011 2011
Blades 9 9
Format full-frame full-frame
Groups 12 12
Af motor USM USM
Elements 16 16
Weight g 3850.0 2350.0 (lighter)
Length mm 343.0 248.0
Stabilized Yes Yes
Diameter mm 163.0 128.0
Min focus m 2.7 2.0 (closer focusing)
Max magnification 0.17 0.18

Canon EF 400mm F2.8L IS II USM

A professional 400mm f/2.8 telephoto with image stabilization and fluorite elements, aimed at sports and wildlife on full-frame EF bodies.

Pros

  • f/2.8 aperture at 400mm
  • Stabilized
  • Fast AF
  • Extender compatible

Cons

  • Heavy (about 3.9 kg)
  • Needs a monopod or gimbal head
  • Large

Canon EF 300mm f/2.8L IS II USM

The EF 300mm f/2.8L IS II USM is a professional 300mm f/2.8 supertelephoto with image stabilization and fluorite elements. For sports and wildlife on full-frame Canon EF bodies.

Pros

  • f/2.8 aperture
  • Fast autofocus
  • Image stabilization
  • Compatible with extenders

Cons

  • Heavy (about 2.4 kg)
  • Large and needs a support system
  • Narrow depth of field

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