Got this for my wife who has a Nikon D3200. She is constantly changing from the 18-55mm lens to a 70-300mm lens. This lens fits nicely in the middle. Good sharp pictures, easy to use and auto focus spot on.

Easy to use; well built

Nothing so far

Perfect travel companion with excellent image quality for a tight budget. Lower build quality than their A series and still zoom ring but this is tolerable for its price range

I bought this lens used a couple of years ago and paired it up with a used canon 7d, the total investment for both lens and camera was little less than $600. Overall, this is a very sharp lens. The drive motor is a little noisy but it focuses quite fast even in low light conditions.

The Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM lens is a good choice for those who don't want the hassle of changing lenses all the time, or perhaps if you're travelling and attempting to keep your kit bag light.

I recently got the Sigma 18-200 f3.5-6.3 DC Macro OS HSM C lens for my Canon 1100D. This is the first third party lens I've bought. Took over 200 photos the morning after receiving it (only stopped taking photos because I had to go to work) and am very happy with the results.

limited use but doing all it is supposed to

use it as an every day lens for what, also is very good with a close up fikter attached

Great Picture Quality; Lightweight; Simple Controls

Is the 18–200mm APS-C zoom a sought-after lens category? We've tested four of them in recent years, and almost all the current stabilized models are in their third-generation. (Yes, they're popular.

Sigma continued the miniaturization trend; at the beginning of 2014 they presented another lens of that series, the C 18–200 mm f/3.5–6.3 DC Macro OS HSM. In its case the number of elements decreased from 18 to 16 but the number of low-dispersion and aspherical elements actually increased.

compact dimensions for such a wide focal range; very good image quality in the frame centre across the whole focal range; decent image quality on the edge of the frame; very good correction of the longitudinal chromatic aberration; sensible correction of lateral chromatic aberration; proper...

a bit too many reflections near 100 mm focal length; noticeable vignetting at both ends of focal range; image quality on the edge of the frame at 18 and 100 mm and at the maximum relative aperture a bit under the decency level