The Canon EF 70-200mm f4L IS usm lens, is without doubt, one of the best lenses available. The results obtained from this lens, surpass any that I have had from any other Canon zoom lens. ( I have been using cheaper,non L series Canon lenses for over 25 years.

This is one of my "trinity" of zooms I use on my 40D and 50D. If you never have tried a a professional level lens (they are called "L's in Canon-ese), you will be shocked at how smooth and solid a lens like this is!

Quite simply an excellent lens. As sharp as primes in its telephoto range, great contrast and colour, and state of the art IS. What it gives up in maximum aperture to the f2.8 version can be forgiven considering it's half the weight and 2/3 the cost.

I had read about this lens on how sharp images are even wide open, and how good the IS system works,So after doing same tests my self i can say this is one awesome lens,While shooting i went as low as shutter speed 1/13 at 200mm with the image stabilizer on, And it kept on taking sharp images ..

I bought this lens as an addition to my 17-40 lens, using it on a Canon 7D I've had to learn to be very careful on what shutter speeds are used to avoid camera shake, even using a tripod. You need to have a very fast shutter speed to remove any hint of camera shake.

For years I have looked at the Canon 'white' lense and wanted one. Now, due to being able to upgrade to digital and Smifu's amazing prices, I actually own one. What a lense! Lighter than I expected and much clearer than the old Canon lenses (I got all my old gear out to compare).

This has been one of the best lenses I have ever had as a multifunction lens the best it the canon 50mm f-1.2 L series This lens is in addition to several other "L" series lenses that I own I shoot with a 5D Mark II, Canon 7D and the 450D (aks) the SXi.

We take a closer look at the Canon EF 70-200mm f/4L IS USM and see if it can compete with its f/2.8 sibling

Oh man! This lens is some fun! Easy to use. Pictures are beautifully clear & brings you right into the action. Fast & quiet. Love this lens.

This is my first telephoto and my first L lens. The main purpose of this lens is just to take pictures of my kids and landscape. All I have to say is that all the positive comments about this lens you read is true.