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 ‘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

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 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.

A super-telephoto zoom lens with optical stabilisation ideally suited to wildlife photography. This super-telephoto zoom lens costs around £695 and sports a silent Hyper Sonic focusing motor and optical stabilisation.

Price; Optical Stabilisation; HSM Focusing; Build Quality; Resolution at shorter focal lengths

Falloff in resolution at 500mm; CA at 500mm; 86mm

Covering 150-500mm is a great zoom range, especially when you factor in a digital crop like 1.6x found on our test camera, the Canon EOS 50D, as this takes the focal length range up to 240-800mm!

This lens is pretty sharp out to about 400mm. At 500 its acceptable only. If you are trying to shoot wildlife and birds it works well but it certainly cannot compete with the better Nikon long lenses but then again it is only about $900.00 and the good Nikons can run 4 to 5 grand.

Consistent Output; Easily Interchangeable; Strong Construction

Heavy

Yes, I would recommend this to a friend

Consistent Output; Fast / accurate auto-focus