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Certified Keeper Canon EF 200-400mm f/4L IS USM Extender 1.4x
88 PixelMeter Score 16 reviews

Pros Pros
  • Sharp image quality across the frame
  • Durable weather-sealed construction
  • Integrated 1.4x extender for versatile focal range
  • Fast and accurate autofocus performance
  • Effective image stabilization
Cons Cons
  • Very heavy and large physical footprint
  • Extremely high price point
  • Vignetting when shooting wide open
  • Difficult balance for handheld use
  • Autofocus limitations with extenders

Launch price Launch price $11,799
Focal length & aperture Focal length & aperture 200-400mm f/4
Mount & coverage Mount & coverage Canon EF · Full-Frame
Stabilization Stabilization Optical IS
Close focus Close focus 2 m (0.15x)
Filter thread Filter thread 52mm
Autofocus motor Autofocus motor Ring-type ultrasonic
Weight & size Weight & size 3620g (7 lb 15.7 oz) · 128 x 366 mm (5.04 x 14.41 in)

Announcement date Announcement date May 14, 2013
Launch MSRP Launch MSRP $11,799
Lens mount Lens mount Canon EF
Image circle coverage Image circle coverage Full-Frame
Lens type Lens type Zoom
Lens line / series Lens line / series L-series

Elements Elements 25
Groups Groups 20
Special elements Special elements 1 fluorite, 4 UD
Built-in teleconverter Built-in teleconverter 1.4x

Focal length (wide) Focal length (wide) 200mm
Focal length (tele) Focal length (tele) 400mm
Max aperture Max aperture f/4
Minimum aperture Minimum aperture f/32
Diaphragm blades Diaphragm blades 9

Diagonal angle of view Diagonal angle of view 12° - 6°

Autofocus motor Autofocus motor Ring-type ultrasonic
Minimum focus distance Minimum focus distance 2 m
Maximum magnification Maximum magnification 0.15x
Focus mechanism Focus mechanism Internal focus

Optical stabilization (OIS) Optical stabilization (OIS) Yes

AF/MF switch AF/MF switch Yes

Weight Weight 3620g (7 lb 15.7 oz)
Maximum diameter Maximum diameter 128mm (5.04 in)
Length Length 366mm (14.41 in)
Filter thread Filter thread 52mm
Weather sealing Weather sealing Full weather sealing
Internal zoom Internal zoom Yes
Tripod collar Tripod collar Included

Lens hood Lens hood ET-120(WII), included
Teleconverter compatibility Teleconverter compatibility 1.4x and 2.0x