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Feel the intensity, not your equipment. Maximum image quality. Minimum weight. The new ZEISS SFL, up to 30% less weight than comparable competitors.

EF 100-400mm f/4.5-5.6L IS USM

Canon EF 100-400mm f/4.5-5.6L IS USM
Manufacturer
Canon

Reviews summary

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Overall rating
5.00 star(s) 2 ratings
Recommended
Yes
Price
0$
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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Reactions: John T Tromans
Recommended
Yes
Price
0$
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.
rpg51
rpg51
But for some of us without a stash of lenses, and moving to Canon mirror less, the question is, EF 100-400? Or RF 100-500. ??
WildPhotographer
WildPhotographer
I'd have to say that the EF100-400mm f/4.5-5.6 IS L is very variable. In production since the early noughts, early examples were renowned for being soft. As others have said it is also a dust sucking monster.

Later examples were significantly improved on the sharpness front, so if buying, check the serial number with Canon for manufacture date. A far more certain purchase with any camera from 2015 onwards would be the Mark II version of this lens, which is superb at all focal lengths.

Others have mentioned the Canon convertors. The original Mk 1 versions should not be used with any modern camera. The Mk II 1.4x was acceptable with cameras unto around 2010/11. With anything later, don't scrimp: buy the Mk III converter. Ref the 2x converter, Never, ever buy anything but the Mk III, which is excellent.
WildPhotographer
WildPhotographer
@rpg51 what did you buy? WIth hindsight, I would definitely go 100-400 Mk II - I will shortly be selling my own (mint) 100-500mm lens, despite it being very sharp.
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