Let's say you have a 5d or a 5d2 and you are gonna go on vacation and wanted to take one lens. Which lens would I suggest? Most likely this one as it serves a great purpose for travel. Got your wide, got your mid telephoto and got your Image Stabilizer. Just add your tripod and have a great time!

The L-series is Canon's flagship professional lens range, designed to include outstanding image performance, ultimate operability and weather resistance. The EF 24-105mm f/4L IS USM offers a lightweight alternative to the renowned EF 24-70mm f/2.8L USM. offers the highest possible optical quality with no change in aperture over the full focal range of the lens. This allows photographers to set exposure at the widest aperture and zoom all the way through to 105mm without having to vary the shutter speed.