Awesome lens, like to work with it! The image quality is very good. This lens really doesn't have any cons! You can find examples at: Hochzeitsfotografie Frankfurt .

Sharp; Light; Awesome image quality

None

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.

This is a great lens if you want to spy on people or get shots from a distance. I don't spy on people but I just thought I'd point that out. This is a great lens though, but tbh, I am no expert. This was my first lens I ever bought so it's kind of special to me.

I have been the 70-200/4 L IS since it was introduced in 2007 and this is my second one after the previous one was given to a relative as a Christmas gift. The pictures from both units are consistently sharp indoors or outside and the constant f/4 aperture makes it easy to satisfy clients and family...

Consistent Output; Durable; Fast / accurate auto-focus; Strong Construction

I bought this lens rather than the f2.8 version because of it's size and weight. If compared to the f2.8 version, this lens is approximately half the weight, and noticably smaller. This lens is a joy to hold and use because it's really light, and yet it produces outstanding pictures.

Very lightweight, built like a tank; Zoom ring and the focus ring are all smooth

Sound of the motor is audible

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

The lens focuses very fast with almost no noise. The IS function is a nice touch, but I am not sure how practical it really is. Having upgraded from an entry level lens, this lens is much heavier. Images are sharp with great color.

Consistent Output; Easily Interchangeable; Easy To Clean; Sharp Focus; Strong Construction

Slightly Heavy

Like many of Canon's L-series (luxury) lenses, this one is finished in cream or off-white, rather than the usual black. The idea is that the outer surface reflects more light, and therefore incurs less heat build-up when used in bright sunlight for long periods of time.

Sharpness across the zoom range; weather sealing; autofocus speed

Good but not great for chromatic aberration

The build quality of this lens is excellent - no wobbling and smooth controls. The lens does not extend during zooming and thanks to its inner focusing system the front element does not rotate so using a polarizer is no problem - unless you attach the hood of course.

When comparing the f/4 variety of this lens to the flagship f/2.8L version, in some ways this Canon f/4 lens is better designed. This is thanks to the zoom ring being slightly wider and easier to use as it has a slightly smaller diameter.