Yourlensreview - Lens - Canon EF-S 10-22 F/3.5-4.5 USM

Excellent contrast and colors
Sharp as a tack
You won't see it focusing, it's as fast as my 17-40
Yep, it's wide alright

Tiny bit soft at 10/3.5 towards the borders
Some vignetting at 10/3.5
Build quality could be better, but it's alright.

Well, after long doubt if I would take the jump to full frame I realized my customers have never asked me for bigger files. I just couldn't justify the 4,5K euro I needed to buy a 5D + 24-70. Having my 17-40 as a walkaround on my 30D I just missed something really wide.

Well, this is it, and what a lens this. Colors are just mad (look at the _unedited_ samples), contrast is superb and the auto focus is just stunningly fast (again). It's just a bit soft at the borders at 10/3.5 and it vignettes, but stop it down just 2/3rds and the "problems" are gone. For it's price, quite high, I would liked the L-build from my 17-40 (same price...). That explains the two grades below 10. Otherwise it would have been 10/10 all the way.

I have included some 10/3.5 to illustrate it, terrible isn't it? ;)

It is very very wide :)
Fast focus, although it tends to hunt slightly sometimes.
The weight, it is very light.
No hotspots in infrared shots (see example).

Sometimes too wide to distort the image, which is nothing against the lens but againt the photographer.

This lens is an awesome catch. I sold my Tokina 12-24 and bought this one together with my 20D. The Tokina is built like a tank, but this one feels as strong although it is very light.

This lens is sharp. Wide open.
Colours and contrast are simply stunning.

Price.

My favourite lens with a distance (and I do own a nice white Tele)

Bought mine with cashback which made the price difference with the (lightentrywise) slower Sigma 10-20 a no brainer. Since there is no substitude for wide, and 12mm lens was and is no option. Pictures from this lens always bring a smile to my face, a joy to use.