Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras by SIGMA
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Digital camera reviews of Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras
Digital camera Review: Awesome lens.
Summary: 5 Stars
I have been using the lens with my Nikon D70 for over a year, and I am very happy with it. I use the lens for most of my day to day shooting.
(+) 10mm focal length - Yee haa! One year after, and I still can't get the smirk off my face. Even with the accompanied pincushion distorsion (see below) the 10mm focal length is simply a joy (Nikon's zoom only goes as wide as 12mm, 12 is noticable narrower than 10).
(+) Optical quality - is very good as far as I can judge. There is a pretty noticeable pincushion distorion at the 10mm end, but I understand all ultra-wide zooms suffer from the same phenomena. The distorsion at 12mm focal length is far less noticable.
(+) Build quality - no complaints. except for this lens I also own Sigma's 30mm f/1.4 lens (which has disappointing optical performance IMO). 30mm's optical issues aside, - both feel solid and stable, no loose rings or levers or anything like that. Sigma does an excellent job here.
(+) HSM focusing works very well, my guess is that Nikon would be as good or perhaps slightly better. One of the other non-Nikon alternative uses the screwdriver blade type auto focus rather than ultrasonic motor (the built it ultrasonic AF is way nicer to use).
All the negatives or 'cons' if you will, are right there in the data sheet, no unpleasent surprises whatsoever. The lens is big and heavy but so is the competition (Nikon). I wish it could go a little further to say 22mm or 25mm, but again - I knew it won't, before I bought it. As a Nikon owner I don't really think there a significantly better choice, if you own a Canon DSLR body though, then the EF-S 10-22mm f/3.5-4.5 USM lens may be a better choice.
5 start with no hesitation, no other DSLR lens I know gives so much value for the money! (except, perhaps, for that 10-22 canon lens, which is the forbidden fruit for us Nikonians).
Digital camera Review: Bargain UWA
Summary: 4 Stars
I wanted the Canon EF-S 10-22mm but then realized I don't need or use ultra wide that often. So I figured I should just save a bit of my money for something I won't use all the time. Image quality is great, not as good as some pictures I've seen with the Canon but the Sigma is great. Comes with a nice case and the hood. Highly recommended for ultra wide angle shots. This is going to be a great lens for when I go traveling.
The build of the lens is great. Personally, I was a bit skeptical because I trust Canon, but for my first non-Canon lens I'm very impressed. Even owners of the Canon 10-22 say the build isn't as good. The Sigma is durable and has a nice finishing.
Digital camera Review: Best Value Ultra Wide Angle Lens
Summary: 4 Stars
This lens has excellent build quality, which is expected for a Sigma EX lens. The USM motor makes auto focus fast and quiet. The image is very sharp. The only thing that prevents me from giving it five stars is its pronounced distortion at the 10-12mm range. So this lens is great for landscape but not for architectures.Digital camera Review: Better sharpness, brightness and color saturation than Canon's 10-22
Summary: 5 Stars
I just did some test shots comparing the Sigma 10-20mm and the Canon 10-22mm. The Sigma beat the Canon hands down on sharpness, brightness and color saturation without question. I've owned the Canon 10-22mm for almost a year and have never been satisfied with the softness of the images it produces. I've even sent it to the factory 3 times for adjustment. The tests I did today show the Sigma to be surprisingly the better lens hands down. It may be that I purchased a bad Canon lens, but after 3 trips to the factory for adjustment, I would think it would have been spotted. I'm constantly being told by reps how good the Canon 10-22mm is as it has the super UD glass and is supposed to be similar to L series quality. I've never seen this on my 40D and I'm now ecstatic to have found the Sigma to replace it. This is a great lens for a very nice price.Digital camera Review: Crap! Go with Canon or Tokina
Summary: 1 Stars
I bought this lens never was happy with the results. Not very sharp and to much distortion. Very nice wide angle, but I did not feel the optics were very good. Recently purchased the Tokina 12-24 and could not be more happy! Only thing better would either be the Canon 10-22 or the Tokina 11-16. Save you money and buy one of these. I use my wide angle more then my kit, and it is worth investing in.