Canon EF 24-105mm f/4L IS USM

The Canon EF 24-105mm f/4L IS USM was originally designed to complement Canon's first enthusiast full-frame camera, the EOS 5D, and combines a useful standard zoom range, a constant maximum aperture, good optical quality and effective image stabilization. Optical construction includes one Super-UD glass element and three aspherical lenses to minimize chromatic aberration and distortion. The result is very good image quality, especially when stopped down a little. Canon's ring-type USM gives silent but quick AF, along with full-time manual focus. Like Canon's high-end DSLRs, this lens is also dust and moisture-resistant.