I bought this very lens about 2 years ago. I love it. The pictures I take with this lens looks like a professional has taken them.The telephoto lens is a must have for taken outside pictures.

There are many uses for the Canon EF 70-200mm f/4.0 L USM Lens, but portrait photography is one of the best. Outstanding image quality.The most dazzling lens in my bag.

Consistent Output; Durable; Easily Interchangeable; Lightweight; Strong Construction

Poor in Low Light

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!

First released in mid 1999, Canon EF 70-200mm f/4L USM has immediately become a choice for many prosumers and professionals alike. This lens replaced Canon's ancient EF 100-300mm f/5.6L, which was also very liked in the photo community.

What Digital Camera founds out if this Canon f/4 lens is better designed than the flagship 70-200mm f/2.8L lens.

I love this camera... I take railroad photographs and it is awesome. Wish it had more mm, but for the price it is plenty. Photos are amazingly sharp, even with the 1.4x extender. Focus is fast and silent.

Consistent Output; Durable; Easily Interchangeable; Quick Focus; Rugged; Sharp Focus; Strong Construction

Heavy; Scratches Easily

The Canon EF70-200mm f4L IS USM Telephoto Zoom Lens is a great and versatile lens for landscape and wildlife photography. It is very very sharp with dynamic color. It is not too heavy and is very portable. The focus is just excellent.

Sharp; versatile; portable

none

This was my first significant lens purchase, and it hasn't disappointed. I have a Rebel Xsi, and without the battery grip, this lens would seem a bit large on that body, but otherwise it does a phenomenal job! After much research, I decided to start with this lens to add reach to the kit lens.

Consistent Output; Durable; Easily Interchangeable; Quick Focus; Rugged; Sharp Focus; Strong Construction

Heavy

The Canon EF 70-200mm f4 IS USM L lens is a professional grade 70-200mm lens without the size and heft, as well as price, as found in f2.8 versions.

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

The tripod collar is optional; relatively expensive

Lots of professional features for a fraction of the cost ; well-constructed ; slightly slow for action/sports photography, but a marked step in the right direction

Durable; Lightweight; Rugged; Strong Construction

Slow Focus