Canon EF 70–200mm lens

The f/4 USM is popular among weight-sensitive landscape photographers and hobbyists who want L lens quality without spending thousands of dollars.

The f/2.8 versions are popular among event photographers and photojournalists where the lens's lower light capabilities are required.

Some portrait photographers also prefer this lens because the fast aperture produces more background blur and bokeh.

The f/2.8 and f/4.0 image-stabilized versions also feature weather sealing when mated to a weather-sealed camera to such as the Canon EOS 1D-series bodies.

A frequently pointed-out problem with this lens is the placement of the IS and AF switches, which make them prone to accidental flipping during hand-held shooting.