Customer Reviews:
Showing reviews 1-5 of 12
 Poor focus at f2.8 June 22, 2010
Alan Anderson (Colorado USA)
I did a side-by-side comparison of the lens and my favorite canon lens 24mm-105mm - both on a tripod and handheld. This sigma 50-150 mm performed almost as well as my expensive canon lens at f4.5 to f22. But below f4.0 it did not focus at the correct depth. Of course the reason to buy this lens is for the wide f2.8 light-gathering ability; unfortunately this is where the lens focuses poorly. I am sending it back.
 Fast, capable telephoto zoom January 28, 2010
Russ (Midwest)
2 out of 2 found this review helpful
This was my first Sigma purchase in over 35 years. It came highly rated by Popular Photography. I was impressed when I took it out of the box. The build quality is excellent. It yeilds excellent photos at any f/stop. I seldom shoot below f/5.6. It is vastly smaller than the 70-200mm f/2.8 I borrowed. It fits comfortably in my shoulder bag. The 67mm filter size and lighter weight are important. I would recommend this lens to anyone.
This, I think, is the best Prosummer fast lens available at this time. August 17, 2009
Jesus Maldonado Garza (McAllen, Texas United States)
4 out of 4 found this review helpful
Ok, I'm going to simply list pros and cons on this one:
PROS:
* Light weight
* Focus is very accurate, super fast and hypersilent. Some times you don't even know if the lens is working, it is just because the image is in focus that you note the lens focused.
* Construction quality is really good. The lens is inner focus and inner zoom, so there are no moving parts outside, in the open.
* I can't see a better fast, tele prosumer lens out there at this time.
* Price point
CONS
* Flare, but this is a fast lens for shooting in low light, so if you use it for is intended purpose, then there is no problem.
Excellent lens, light, fast, best telephoto for d40, nice bokeh August 2, 2009
Art P (KY, USA)
7 out of 7 found this review helpful
A well built lens by Sigma. Those who are not used to (inexperienced) in focusing properly will realize that this lens is very sensitive. Two objects sitting next to each other but one is slightly farther away from the camera (say 1-2") will show noticeable difference in the sharpness level. So be very careful with pointing at the right object. Otherwise practice will bring you closer and closer to great results.
Very light for its size and capability compared to the Nikkor 70-300mm or 18-200mm VR or not. Well-priced ($600-$700). Fast built-in motor (HSM) and very very quiet.
The best part is the f/2.8. Able to capture images in low light settings, indoor, fast movements, way faster and way sharper than 70-300mm or 18-200mm (f/3.5 or f/5).
Highly recommended.
Autofocus didn't work, sent back July 29, 2009
Dallas Bethune
1 out of 5 found this review helpful
I really wanted this lens to be good because it looks pretty great on paper. Unfortunately when it arrived the autofocus didn't really work at all. I ended up sending it back to Amazon.
Showing reviews 1-5 of 12
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