There are not many choices in the market for 500 mm lens. All but a few are prime. This lens offers the convenience of zoom lens with focal length varying from 150 to 500 mm. Its image quality is excellent from 150 to 300 mm but gradually degrades toward the 500 mm end.

HSM; OS; well built and relatively inexpensive 500mm lens

Slightly worse image quality above 400mm; OS needs about one-second to engage, not immediately effective

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 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

First of all let me state that they have a sort of decieving picture of this lens that makes it look sort of smaller than it is in real life -- READ the SPECS!!! It arrived and the box size right away made me face facts that this was not a smaller lightweight Tele Lens. It weighs 5 lbs!

Carry Strap; Consistent Output; Durable; Easily Interchangeable; Fast / accurate auto-focus; Heavy Duty Carry Case; Lens lock; Nice Bokeh; Strong Construction; Tripod Mount

Bulky; Heavy

I use this for my childrens' sporting activities (swimming, water polo, baseball, golf). Last weekend I tried it out at a water polo tournament and was very pleased with the results. I also have a Canon L 70-200 lens that I really like, but it just doesn't reach far enough.

Consistent Output; Durable; Easily Interchangeable; Fast / accurate auto-focus; Rugged; Strong Construction

Heavy

I looked at and tried Canon 100-400 and compared shots taken with the Sigma 150-500. Currently using a Canon 40D body, I decided to get the Sigma 150-500 and very happy I did. Beautiful lens and not to heavy but I would recommend using a monopod to save your arms and wrists from the strain due to...

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

Price a working Man can afford

at this time none

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 is the third Sigma 500mm zoom that I've owned. The first was their non-OS 50-500mm, and then their 50-500mm OS and finally the 150-500mm OS. I use the 150-500mm on Nikons, including a D3, D700, D7100, D300 and D2X.

Reach; Silent motor; fast target acquisition speed; reasonable price; sturdy build; lightweight for its size

Some may find it "plasticy", but the use of plastic keeps it both lighter and less expensive; MF only with a TC

Just purchased the 150-500mm Sigma for my wife's Nikon. I felt compelled to test it against the 3 similar lenses we have. Here are the results, in order of image quality: At 300mm, f8: Sigma 150-500 Nikkor 300 f/4 Nikkor 70-300 vr Nikkor 55-300 vr The 300 f/4 and the Sigma were very close.

My tests show better than the Nikon 55-300 vr; 70-300 vr; 300 f4 (with and without a 1.4x TC

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