It's the IS in the name that distinguishes the Canon EF 70-200mm f/4L IS USM from the cheaper 70-200mm f/4L USM. The lenses are virtually the same size and shape, but the more expensive of the pair comes with built-in 4-stop image stabilisation (IS).

Part of Canon's professional L-series, the Canon EF 70-200mm f/4L IS USM boasts in-built image stabilisation. It's the IS in the name that distinguishes the Canon EF 70-200mm f/4L IS USM from the cheaper 70-200mm f/4L USM.

Mounts: Canon Format: Full frame Construction: 20 elements in 15 groups, eight diaphragm blades Closest focus distance: 120cm Filter thread: 67mm Autofocus: ultrasonic (ring) Dimensions: 76 x 172mm, 760g Tested on: Canon EOS 7D Like many of Canon's L-series (luxury) lenses, this one is finished in...

You want a medium telephoto lens for your Canon dSLR, something with a constant aperture, solidly built with pro quality, yet light enough to carry on adventure to some faraway part of the world. You have looked at the f2.8 models but didn't think you could afford them or the Sherpa to carry them.

Professional grade build quality, including dust and moisture sealing; four stops of image stabilization system; relatively lightweight

The tripod collar is optional; relatively expensive

I purchased this lens for my 700D after reading multiple reviews and researching various lenses. This is my first L lens and I am very pleased with the pictures and the way the lens handles.

Fast auto-focus; Great Value; Lightweight; Superior build quality; Super-sharp images

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Pros: Razor sharp focus. Fast lens. Cons: Haven't found any yet Other thoughts: This lens is one of the finest lenses I have used. The pictures are unbelievable. There really is a huge difference when choosing a Canon L lens. [...]

Absolutely no regrets in purchasing a used EF 70-200 from Adorama! The lens itself is amazing although the weight (while less than the f/2.8)takes some getting used to. Easy to use with fast focus!

Durable; Easily Interchangeable; Fast / accurate auto-focus; Rugged

I believe I got mine in 2006 or 2007 and it has never disappointed. The f4 works for most outdoor use and it is a lens you can carry easily compared to the 2.8 with foot. The amazing quality really showed when I used it with my now retired film body, but also shows when my 17-85 is at telephoto and...

Amazing image quality and image stabilization

No weaknesses; Nicking it on price would not be fair because the big white Canon lenses are top tier and it seems like they spare nothing to make them

Canon 70-200mm f/4L IS USM is a premium quality lens from canon. It is one of the lens that every photographer should have in their bag.

I have used this lens for about two months now. Focus speed is lightning fast and accurate and the L glass is perfection. It's a little heavy for a walk around lens (I use the 17-85 mm for that) but it is always in my bag. You won't be disappointed.