Canon EF 200-400mm f/4L IS USM Extender 1.4x Lens

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Gold Award
From our point of view, the absolutely stellar optics and innovative design earn the lens our top award.”

Key Features

  • 200-400mm focal length with f/4 constant maximum aperture; 280-560mm f/5.6 with built-in 1.4x extender engaged
  • 320-640mm f/4; 448-896mm f/5.6 (with extender engaged) equivalent on APS-C cameras
  • 2.0m / 6.6ft minimum focus
  • Weather-sealed magnesium alloy barrel
  • Inner focusing ring, USM motor, a high-speed CPU, and optimized AF algorithms for fast and accurate AF
  • Optical Image Stabilizer provides up to four shutter speed stops of correction
  • Three image stabilization modes (standard, panning, and during exposure only) provide excellent results for a wide range of shooting situations
  • One fluorite and four UD lens elements provide excellent correction of chromatic aberration throughout the entire zoom range

Product Description

The EF 200-400mm f/4L IS USM Extender 1.4x features a flexible 200-400mm focal range with a fixed f/4 aperture, 4-stop optical Image Stabilizer and for the first time in a commercially available lens, a built-in 1.4x extender. These features combine to provide an outstandingly versatile lens for professional sports or wildlife photographers. A robust magnesium alloy design, environmental protection and specialised lens coatings also make it ideal for mobile use, combining with the finest quality optics to deliver exceptional results, even in the harshest conditions.


Principal specifications
Lens type Zoom lens
Max Format size 35mm FF
Focal length 200–400 mm
Image stabilisation Yes (4 stops claimed)
Lens mount Canon EF
Maximum aperture F4.0
Minimum aperture F32.0
Number of diaphragm blades 9
Elements 25
Groups 20
Special elements / coatings Fluorite and Ultra-Low dispersion glass elements, Sub-Wavelength Structure Coating and Super Spectra Coating
Minimum focus 2.00 m (78.74)
Maximum magnification 0.15×
Autofocus Yes
Motor type Ring-type ultrasonic
Full time manual Yes
Focus method Internal
Distance scale Yes
DoF scale No
Focus distance limiter 3 positions: Full, 2m-6m, 6m-infinity
Weight 3620 g (7.98 lb)
Diameter 128 mm (5.04)
Length 366 mm (14.41)
Materials Magnesium alloy barrel
Sealing Yes
Colour White
Zoom method Rotary (internal)
Power zoom No
Zoom lock No
Filter thread 52 mm
Filter notes Rear drop-in filter holder
Hood supplied Yes
Hood product code ET-120 (WII)
Tripod collar Yes
Notes Switchable built-in 1.4x extender (8 elements / 4 groups) converts lens to 280-560mm f/5.6 lens with 0.21x max magnification


User Reviews

2.5 out of 5 stars
  • yuyucheu, Sep 6, 2014 GMT:
    tested canon ef 200-400 f4 extender 1.4

    this is very expansive lens. after test fell it's very so-so. please see photos. how do you think. it's $12000 lens. canon 200-400mm f4 extender 1.4x lens. this is 1x focal length 200mm. canon 200-400mm f4 extender 1.4 lens. this is 1.4x focal length 280mm. this is 1x focal length 400mm this is 1.4x focal length 560mm

    Continue Reading

Questions & Answers


who uses a Canon type II tele plus the 52WII polarizer plug in filter?

Hi guys, I'd be very interested in sample images and your thoughts on using the 52WII circular polarizer on the 300 / 400 f/2.8 II or the 500 / 600 f/2.0 II (thoughts on the type (I) teles are also welcome. I own the 300 f/2.8 L IS USM II and think of spending the 200 bucks for the filter (sorry only the above mentioned lenses are of interest to me) I have following questions: 1) How much is the image quality affected? 2.) How much light do you loose - is it in the range of 1-2 stops? 3.) Do you use it often or is it a waste of money? 4.) In which situations do you use the polarizer? 5.) Is the lens still water resistant with the filter in place? 6.) How good does the mechanism to control the effect work in the field? thx for your answers in advance!!!

joger asked
1 year ago


i do have the filter you mentioned for my 300 2.8II but i haven't used it yet, this may not be the answer you are looking for but i'll be interested in other photogs answer who have used it, as well ;-) i will let you know when i use mine but i am not sure when at this time! :-( cheerz. Continue Reading

rebel99 answered
1 year ago

oh, and good thing is that it fits my 600 f4II as well, i just tried it ;-) cheerz. Continue Reading

rebel99 answered
1 year ago

was expecting that :-) (would be ridiculous to have several differnt designs for such a simple filter (holder) system) Continue Reading

joger answered
1 year ago

Warranty Information

"A Product, when delivered to you in new condition in its original container, is warranted against defects in materials or workmanship as follows: for a period of one (1) year from the date of original purchase, defective parts or a defective Product returned to Canon, or its authorized service providers, and proven to be defective upon inspection, will be repaired with new or comparable rebuilt parts or exchanged for a refurbished Product, as determined by Canon or the authorized service provider n their sole discretion. Replaced parts and exchanged Products will become the property of Canon."

Go to Canon USA's warranty page for more information. DPReview GearShop is an authorized Canon dealer in the United States.

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