The EF-S 15-85mm f/3.5-5.6 IS USM Lens from Canon
is a very versatile zoom lens with a 35mm focal length equivalence of
24-136mm optimized for APS-C format DSLR cameras. Measuring just 3.5" in
length and weighing about 1.25 lb, the lens boasts a convenient wide
angle to telephoto focal length in an easy to carry form factor.
and UD-glass lens elements minimize aberrations and contribute to the
lens' impressive imaging quality throughout its zoom range. Optical
Image Stabilization provides the equivalent effect of four shutter speed
stops for clear imaging in low light situations. An ultrasonic
autofocus motor (USM) brings with it fast, smooth and quiet AF action,
which is crucial when shooting HD video and manual focus override allows
manual focus precision even in AF mode.