Sigma's DC 18–250mm f/3.5–5.6 Macro OS HSM lens is designed to be an all-in-one lens and the focal length is one of the widest available on the market. It was specifically designed for use with an APS-sized sensor, which makes it more like a 24–300 lens, depending on the crop factor of the camera...

Light; Big zoom range; Pretty good image stabilization

Soft edges; Significant chromatic aberration

I'm very sorry but this lens is terrible. The sharpness was horrific especially at each end of zooming but macro and extended top 250. Maybe because I'm using a very new Canon (T7i) but this did not produce good images. Perhaps mine got damaged but I kind of doubt that it was broken.

Don 't be afraid to buy this lens !!! I have several Nikon lenses and Tamrons and was skid dish about Sigma. I have had this on my Nikon for several months now and won't take it off. This is a #1 walk around lens. It's ready for anything. There is some weight to it but not too bad.

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

Very convenient lens. Get this one with my 500D is a nice combo. No need to change between the 17-55 IS and 70-200 L as before. I can leave the two lenses at home and travel light with only one lens. IQ is OK.

Very useful zoom range; fast and near silent focus; reasonably sharp from 18-80 mm

Very convenient lens; Get this one with my 500D is a nice combo; No need to change between the 17-55 IS and 70-200 L as before.

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.

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

Had some pleasing results on an old EOS 350 and new 1300. Very useful zoom range and saves on lens swaps for most general situations. Build quality seems OK. The lock function is required as will creep when carried without it on - no real problem and expect really with it's impressive range.

General uses inside and outside. Scenery and people, portraits, etc. Only reason I gave it 4 and not 5 stars is the need to switch off Auto focus, in order to manual focus, unlike Canon USM lenses. Also it stops down to 5.6 sooner than Canon's 18-135.

Comes with Hood; Compact When Retracted; Great zoom range; Light Weight; Quiet

Manual Focus Is Switched; Slower Ap Than Desired