So far the lens works great. It is a little slow in lower light but not as bad as most people. The one negative thing is the cost of filters. If you want or think you need a filter spend the money and get a high quality one.

When you take a look at a decent telephoto zoom lens reaching 500mm in focal length you expect it to be weighty, and Sigma's APO 150-500mm lens is no exception. This lens is designed to work on full-frame cameras and it's easy to see why once it's mounted, as it really needs a weighty camera body to...

Great focal range; Overall sharp images; Good price

Maximum aperture f5.6-f.3; Weighty

This is a great value for a long lens!! BUT!!!!!! The price you pay does not include Sigmas' approval for what you may think is a defect. We have all heard of the term "creeping"... referring to a lens that is set at a distance... then drifts...

my wife uses this lens on her canon 1100d camera.after reading reviews about the weight i was a bit hesitant to purchase the lens,but had no need to worry, carries it around with her attached to the camera for most of the day(she is only 5feet tall and 8.5 stone).takes some getting used to but we

Consistent Output; Durable; Easily Interchangeable; Sharp Focus; Strong Construction

Lens Creep

The ‘DG' after the Sigma's name indicates that it can fit both 35mm film cameras and DSLRs. The ‘OS' stands for Sigma's own Optical Stabiliser technology, which uses moving elements within the lens to counter camera shake. The ‘HSM' stands for Sigma's HyperSonic Motors, which are used for autofocus.

I did a whole lot of research before deciding to buy this baby. Oh my !!! This is fun to shoot with. I will be keeping this lens for a long while unless they come out with a new one for the same price that is better but I don't know how you can make this thing better.

This is a great lens for Sport, Wildlife and even some portrait photography. The lens can get a little heavy after a while and a tripod is recommended. I love the feel and and the close up shoots I can get without intruding in my subjects face.

This lens adds great versatility to photography, great build and ease of use, it is rugged and takes exceptional clear shots. The only down fall to this lens is it's weight and takes a bit of getting used to.

Easy to use; Build quality

Bulky

For this price those lens fits the bill. I have not tried them out in multiple conditions yet, but for the price they cannot be beaten.

This Lens is just what I wanted. Great for wildlife photos.

Price a working Man can afford

at this time none