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Home » Cameras, DSLR & MFT (micro four thirds) » SLR & MFT (micro four thirds) Lenses  

Canon EF 100-400mm f/4.5-5.6L IS USM
Reviews Views Date of last review
2 3693 Tue March 10, 2020
Recommended By Average Price Average Rating
100% of reviewers None indicated 9.0



Description: The Canon EF 100-400mm F4.5-5.6L IS USM is a stabilized super-telephoto zoom lens for Canon's full-frame and APS-C digital SLRs. One of the older L-series lenses in Canon's current lineup, the 100-400mm has long been a favorite of enthusiast photographers working in the sports and wildlife fields, and it is compatible with Extenders 1.4x II and 2x II for even more reach (albeit with a penalty in maximum aperture and critical image quality). The lens is weather-sealed, and its push-pull zoom action has a friction control. The downside of the push-pull design is that it tends to suck in dust, over time. Optical construction includes fluorite and Super UD-glass elements.


Principal specifications
Lens type Zoom lens
Max Format size 35mm FF
Focal length 100400 mm
Image stabilization Yes (2 stops)
Lens mount Canon EF
Maximum aperture F4.55.6
Minimum aperture F3240
Aperture ring No
Number of diaphragm blades 8
Elements 17
Groups 14
Special elements / coatings Fluorite and Super UD-glass elements largely eliminate secondary spectrum
Minimum focus 1.80 m (70.87&#8243
Maximum magnification 0.2
Autofocus Yes
Motor type Ultrasonic
Full time manual Yes
Focus method Rear
Distance scale Yes
Focus distance limiter Yes
Weight 1380 g (3.04 lb)
Diameter 92 mm (3.62&#8243
Length 189 mm (7.44&#8243
Materials Magnesium
Sealing Yes
Colour White
Zoom method Push/Pull (extending)
Power zoom No
Zoom lock Yes
Filter thread 77 mm
Hood supplied Yes
Hood product code ET-83C
Tripod collar Yes
Keywords: Canon EF 100-400mm f/4.5-5.6L IS USM

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Registered User

Registered: March 2017
Location: Moscow, Russia
Posts: 192
Review Date: Sat March 7, 2020 Would you recommend the product? Yes | Price you paid?: None indicated | Rating: 9 

Pros: Best zoom lens for birds in flight because of push - pull zoom
Cons: Heavy, push - pull zoom can suck dust inside

I'm owning this lens for about 7 years and still thinking that it is the best lens for birds in flight. That is because of its push-pull zoom. You can find the bird in the air on 100 mm and change the focus lenght to 400 mm immediadely by pushing it forward.

I tried 3 copies of this lens in the shop and found that 2 of them had very bad IQ and were blurry but one copy was brilliantly sharp and gave very good IQ of the photos on my Canon 60D. So I bought this one.

The lens is sharp on 400 mm from 7,1 aperture on my Canon 60D. It is less sharp on 6,3 aperture.

I've read about the sucking dust ability of the push - pull zoom of this lens. But I've got just few specks of dust for 7 years of using it.

Tried it with Canon 7DMk2 and got bad focus and bad IQ. Had the same result on this camera with Tamron 150-600 G2. Probably I have the bad copy of Canon 7DMk2 or just need to adjust the focus for this lens in Canon 7DMk2.

Overal - highly recommended lens if you find a good copy that suits your camera.
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Registered User

Registered: February 2020
Location: Hawthorne
Posts: 9
Review Date: Tue March 10, 2020 Would you recommend the product? Yes | Price you paid?: None indicated | Rating: 9 

Pros: Pure quality, fast focus
Cons: Heavy to carry around

It's a great choice for animal watching and wildlife photography. The only disadvantage is that it's quite heavy so it's difficult to carry around. It's better to set up a tripod
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