Customers Review Amazon Product

Good lens but broke
It's a good lens, not fast but good image and ver y little distortion, 10mm is amazing !

But after 4 months of little use the autofocus stoped working, which is not a major problem because manual focusing is OK un such a wide angle ...

A Value Wide Angle with True Pro Quality
This without a sliver of doubt is the best lens I've ever purchased. Now keep in mind I would consider myslef a well-funded hobbyist. I am not a professional photographer. This lens is my second most expensive lens I've purchased next to my Tamaron 28-200 aspherical. But the quality this lens gives put it in a class well above it's price point.

This lens collects the best qulity of light I have ever seen. It is a fast lens and generally allows a 1-2 f-stop improvement in exposure than most. One of the most stunning things about this lens is it's crisp focus. From corner to corner and accross the center - dead on focus. I have noticed nothing in the way of uneven distortion at the widest settings. Also, I have not seen any vignetting, though I'm sure the sun shade would show up in the 10-14mm range.

This lens also feels good. Like good metal wrapped in hard rubber. It could be wrapped in horse lips for all I know, but it's got the right balance and heft I need. It seems to have a magneto focus drive and there is no noise in focusing and no grinding of gears if you manually adjust.

The only draw back to the lens is you cannot effectively use the integrated nikon flash (the pop up). The diameter of the lens is considerable and you will see the arc of the lens cast a shaddow on the lower center of most shots.

If you're looking to buy a wide angle for your Nikon DXXX, buy this lens. You'll find it's one of the best in the bag.

Good and bad
I actually dont like landscapes at 10mm. The distortion at this length makes the center of the frame so distant that it seems too far away. That being said, some people like this style. I still prefer 14-18mm on a DX body, which brings other lenses into the equation.

You can, however, get some neat angles on up close subjects at 10mm which is fun. Also, the image quality of this Sigma is pretty good as well (a bit soft outside of center focus though).

great lens half for the price
Was always NIKON only,until I needed a wide angle zoom lens for my D40. Thats when I found SIGMA. The 10-20mm is great lens at half the price of the NIKON 12-24mm. Tried both lenses before buying the Sigma. It is clear, sharp, and well built. The HSM works great on my D40 & D60. For extreme wide angle and landscape its great -no problems.

Good motion, solid construction, vignetting at 10mm, list of hyperfocal distances.
I've been using this lens for a few months without any major complaints. It can evidence vignetting at 10mm, which becomes more pronounced when you add a 77mm polarizing filter. The physical motion is superb and it's a solid lens. It's missing obvious hyperfocal markings, but you can use the focal length and distance marks to get accurate hyperfocus anyways. I hope this helps others who use this lens.

Hyperfocal lens settings (partial list):

10mm: f/5 @ 1m
10mm: f/11 @ 1.5ft

12mm: f/8 @ 3ft
12mm: f/16 @ 1.5ft

14mm: f/10 @ 1m
14mm: f/25 @ 0.4m

17mm: f/16 @ 3ft

20mm: f/22 @ 3ft