The Sigma 18-125mm f3.5-5.6 DC lens is roughly equivalent to the very popular 28-200mm range with 35mm film cameras, so although the numbers may seem unfamiliar, this lens covers pretty much all you’ll need in one lens. While that always sounds like a great idea it usually comes with fairly large performance drawbacks, as, in general, the wider the zoom range of a lens, the lower the image quality. Over the last few years the difference, especially if you only take pictures in good light, has got much smaller. The use of moulded plastic aspherical elements that lens designers of 20 years ago could only dream of has made lenses like this possible. So if you want something better than the kit lens, and with a wider range, is this a good alternative?

The Sigma 18-125mm f3.5-5.6 DC lens is designed for use solely on digital SLR cameras - it can’t be used with film cameras or full frame sensor DSLR’s. This lens is aimed at the Digital Rebel / Canon 300D / Pentax *ist DS market. The lens feels very light and fairly plasticy - Similar to most kit lenses, and like them, although all the controls work smoothly, it doesn’t really ooze quality. On the plus side, as always, Sigma do give you a decent lens hood in the box.

photo courtesy of Sigma