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.

Very sharp light weight lens. Wide open bokeh is not bad colours are outstanding. As I mostly use this lens on a Monopod I.S is not a concern but would be nice for hand held. Focus and zoom rings operate very smoothly.

This is one of Canon's best lenses. It is not as wide open as the 2.8, but it still workd beautifully for most purposes. It's construction is superb. The controls are nicely damped, and it feels wonderful. It is a fairly heavy lens, but that means that it is full of good glass.

This is my first L, but I got chance to try with other L lenses including 100-400. But so far this is one of the sharper L lenses. Comparing it with Canon 50 f/1.4, Rokinon 85 f/1.4(boken king), Canon 100mm f/2.8 macro(non-IS) and others for sharpness on 40D, nothing can beat my 50mm f/1.4.

My first L lens and is sharp; I had it exchanged once and the second is really good; Focal length is right for walk around to parks and play grounds in sunlight; I already knew its slower aperture and lack of IS and no complains on that; Good bokeh on longer side

My first copy was not good at f/4, but 1-stopped down, its is razor sharp but I returned for an exchange and got a fantastic(may be it is how it is) lens; No cons for me so far

I LOVE TAKING THIS LENS WITH ME ANYTIME IM OUTDOORS LENS HAS EXCELLENT SHARPNESS & UNBELIVEABLE LIGHTNESS AS WELL!!!

Consistent Output; Durable; Easily Interchangeable; Fast / accurate auto-focus; Lightweight; Magic Lens; Nice Bokeh; Rugged; Strong Construction

Ugh None Here

"This is a fast, quiet focusing lens with ""tack sharp"" quality. This is my first L series lens and the images it produces have more than exceeded my expectations. I would hightly recommend this lens."

Clean mean images with this superbly built lens.

Great ergonomics; top IS

f4 might be a tad slower to someone used to f2.8

It is very good lens, images are very sharp and quality are superb! I would reccomend it.

Easy To Use; Fast Shutter Speed

Not Good In Low Light

This is a review of the canon EF 70-200mm F4.0 non IS lens. I have own this lens for just over 2 years and it is the best lens I have ever owned. I brought this lens because I wanted to replace my sigma 70-300mm lens which I got in a bundle with the camera which is a good lens for the ￡200, that is...

super fast; cheap; razor sharp

none

I've owned this lens for over 6 months now and this is by far one of my most favorite telephoto lenses. Image quality is superb, lens build quality is superb, handling is superb. It's one of the best lenses among Canon's lenses and considering its modest price, I think it's a bargain.

Price; image quality; build quality; did I say price

No tripod collar