So far no sign of lens creep, common to many extended range zooms. Seems sharp throughout range, and the macro setting is an added plus.

Price; range

Might seem heavy to some; but not this old guy

This is an amazing product for those who hate changing lenses. this lens is actually the Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM , you can read the reviews at http://www.dpreview.com/lensreviews/sigma-18-250mm-3p5-6p3-os-hsm-macro This was the best price I got it for.

I wanted a solid walkabout lens for my D5100 without breaking the bank. I had the option of buying the Nikon 18-300 for about $1000 or a 3rd party lens. I really did't want to invest too much in glass for a D series mount as I can see myself moving up to an F series in a couple of years.

"This is a very nice lens for travel. It will increase my reach and give me macro option as well. It balance well with D5100 body very well. It feel good on your hand.Another plus is the price, almost 50% less than Nikon's 18-200MM.

Very quality lens, half the price of the similar nikon model. Very good sharpness at F8-F11, at almost all focal lengths. Small and light, OS is working well. Compatibility problems with the new nikon bodies.

Sharp!; Good close up; OS working well; light and small; price

Compatibility problems; creep when unlocked

I use this little gem of a lens whenever I travel. Like all super zooms, it has compromises, but the main one of reduced apertures, is compensated for by the high ISO capability of modern cameras. The longest focal length is also very useful for nature and macro shots.

Light; compact; sharp; fast focus; very usable focal range

No full-time manual focus; though I seldom use this on other lenses

The WDC Sigma 18-250mm f/3.5-6.3 DC SLD OS HSM lens review discovers whether this is be the best all-round, third-party DSLR superzoom lens on the market.

Effective optical stabilisation

Focusing ring rotates in AF

Sigma's lens was tested here using a Canon EOS 40D, on which it focused reasonably quickly (but not remarkably so) and very reliably. Sadly, but not unusually for a lens of this type, the focusing ring rotates and there is no option to apply adjustments when the lens is set to AF mode.

Effective optical stabilisation

Focusing ring rotates in AF

Photographers often have to compromise when it comes to third-party lenses, particularly ones that cover such extreme focal lengths as the 18-250mm. This Sigma model is excellent value for money, offering good sharpness and performance, with a lengthy zoom.

Very lightweight and compact; Pleasing bokeh; Excellent sharpness at the telephoto reach

No manual focus override in AF mode

Sigma's new 18-250mm f/3.5-6.3 DC OS HSM is designed as an all-in-one lens for digital photographers with APS-C-sized (DX) sensors who don't want to carry more than one lens. Covering focal lengths ranging from the 35mm equivalent of 27mm to 375mm with most camera brands (28.8mm to 400mm on Canon...