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

Sigma continues to innovate with their 150–500mm f/5–6.3 APO DG OS HSM ultra-telephoto lens. While designed for full-frame sensors, it's equally at home when used with smaller APS-C sensors. That's a lot of flexibility for one lens.

Wide focal length latitude; optical stabilization; reasonably priced

Not the best choice for consistent low-light work

The Sigma 150-500mm f5-6.3 DG OS HSM superzoom has the most important aspect of any modern long-focus lens – an efficient AF drive system. This is very much the Sigma superzoom's forte.

Impressively quick and quiet automatic-focusing

Significant softness at wide aperture

The 150-500 mm is Sigma 's very popular long telezoom lens with optical image stabilisation. It comes with fittings both for Canon AF and Nikon AF. Its minimum focusing distance is 220 cm so it is not a lens for enclosed spaces, but more for the grand outdoors.

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.

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've tested this lens on my D60 and it is really very good. I'"m planning to buy this as a walk-about tele lens in place of my 55-200 nikkor VR that I'm using with a teleconvertor. (Wont need a tele on this!

super tele range

Costlier than 170-500; Too slow for night

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...

It's vr not support in nikon d5300

The Sigma 150-500mm f/5-6.3 DG OS HSM is a stabilized super-telephoto zoom lens; indeed it's one of only two stabilized telephoto zoom lenses reaching 500mm focal length, the other being Sigma's own 50-500mm 4.5-6.3 DG OS HSM.