This is a good entry level lens. It is sharp enough when the correct focus is achieved. It can produce nice colors in good weather. Like many Sigma lenses, it has no USM, FTM and IS, the three common features found in Canon lenses. The lack of USM makes the focusing slower and not as quiet.

I got this lens as a light weight travel lens to replace the 18-55 f/3.5-5.6 kit lens when I was shooting with the 300D (aka Digital Rebel). It is slightly better in build quality than the Canon kit lens and has a better zoom (~7X) range. It did very well in the 2004 trip to Cancun, Mexico.

Courtesy of PBase lens samples page at: https://pbase.com/cameras/sigma/18-125_35-56_dc_if_asp