I bought this as a general purpose lens for my D90. I had been using a Nikon Nikkor 28-80mm lens. This is a huge upgrade for me in picture clarity and zoom. OS works great and there isn't much zoom creep as is complained in some review on the web. I am very happy.

Great image result for an APS-C style of camera. Used extensively on a major holiday in Europe the lens proved itself. The only downside is 'lens creep' as set in and the 'lock' must be placed on at all times if the camera is facing towards the ground when being carried.

Easy to use

Build quality

Sigma introduced this lens in 2009, as an upgrade to its 18-200mm lens. The lens comes in Sigma, Canon, Nikon, and Pentax mounts, and it includes optical stabilization (as denoted by the "OS" in the lens' title).

The Sigma 18-250mm F3.5-6.3 DC OS HSM, perhaps unsurprisingly, seems very much to be a case of 'take the 18-200mm OS , make it longer', and exhibits much the same characteristics as the older design.

Huge 13.9x focal length range; ideal general purpose and travel lens; Good image quality in the wide to short telephoto range; Fast; quiet autofocus; Low distortion (for a superzoom; Good build quality; smooth zooming action and no zoom creep

Very inconsistent sharpness through the zoom range - extremely soft at 135mm; Soft corners at almost all focal lengths; Image stabilization not as effective as on similar lenses; especially at telephoto end

The Sigma 18-250mm F3.6-6.3 DC Macro OS HSM is one of the best of the current bunch of SLR superzooms, with decent optics, fast autofocus and effective image stabilization. It's a reliable performer, and its close-up capability is handy too.

Photographers looking for a compact, lightweight, all-in-one general purpose and travel lens.;

Anyone unwilling to sacrifice image quality for convenience;

Handling and features Performance Verdict Specification This 13.8x superzoom lens is compatible with Canon, Nikon, Pentax, Sony and Sigma DSLRs that have an APS-C sized sensor or smaller.

Very good performance for a superzoom; Effective optical Stabilisation; Compact size; Light weight; Good build quality

f/6.3 max aperture at 250mm is relatively slow; No full time manual focus override (which isn't really much of an issue

A one-lens solution like this 18-250mm Sigma optic is a very popular option with photographers, because you only need to attach the one lens to your camera and you can enjoy a whole range of shooting options.

Yes, I would recommend this to a friend

Fast / accurate auto-focus; Strong Construction

Full zoom light loss

I bought this lens to travel with so I don't have to carry multiple lenses and am very happy with it. I used the Tamron 19-270 equivalent for a few days and found it to be poor quality, didn't want to spring for the Nikon 18-200, and didn't like the midrange distortion that reviews show in the Sigma...

Versatile

Need Separate Flash

I brought this lens to use as an all in one on holiday because I did not want to be laden with all different lenses, the only other one I took was a wide angle for special land scape and night images or though the 18-250 would have worked too but just needed to take that one other special lens.

Lightweight; Quick Focus; Sharp Focus; Strong Construction