The Canon EF 24-105mm f/4L IS USM was announced in August 2005 as a ‘lightweight’ standard zoom lens for professionals. Introduced on the same day as the EOS 5D, it’s an ideal general-purpose lens for Canon’s full frame bodies, although has also become a popular option for owners of Canon cropped-frame bodies like the EOS 400D / XTi and EOS 40D.
Since the lens represents a different proposition depending on whether it’s mounted on a full-frame or cropped frame body, we have two separate reviews of it at Camera Labs. If you’re interested in how it performs on a full-frame body like the EOS 5D. If you’re interested in how it measures-up on a cropped-frame body like the EOS 400D / XTi, EOS 450D / XSi or EOS 40D, then you’re already in the right place. Read the whole review here & you can buy the lens here.