Yourlensreview - Lens - Sigma 10-20 F/4-5.6 EX DC HSM

Nice build quality, come's with flower shaped lens hood.
The coating of the body feels a bit gummy, so you have good grip in it. I like the matt finish of it, but that is personal.
The lens is very fast with focussing, but it don't realy need a lot of focusing in this range.

You can make weird pictures in very nearby shootings of persons. Some say this is a Con.... but I like it.

Not as sharp is I hoped it was, but maybe I have to play more with the apurture value, and I am still waiting for the summer to have more green grasses and blue sky for a good contrast test.

Did took me long to decide to buy this lens. I was in doubt to buy the Canon 10-22 or this one. The price difference of almost 150 euro, and the completeness of the Sigma (lens hood supllied) made me decide to buy a extreme wide angle. Not a fish-eye, but on this lens a very wide area can be reached as you can see on the Port of Rotterdam picture.

Because a lot of sky is in the frame, you allways have to crop the pictures of landscapes I think.

Not a must have, but you can't leave him at home if you have on.

Extremely wide, excellent for landscape photography. decently sharp. Even without HSM it's fast enough to keep up with other lenses with the MinoltaSony Mount.

Fisheye effect in the corners. Mine is equiped with the MinoltaSony mount, and thus without HSM. Lenscap will not stay on, and had to be replaced with a third-party cap.