The EF 180mm Macro f/3.5L USM ($1,579 list) is a telephoto prime lens for Canon cameras that features macro shooting capability. At its closest focusing distance it supports 1:1 magnification, which means that an object in the image frame will be projected onto the camera's sensor at its actual size. The lens can also be used as a standard telephoto optic—there's a switch on the side of the barrel that allows you to choose between the full focus range for autofocus or to only try and focus on objects that are close to the front element of the lens. One downside to using the lens as a handheld telephoto optic is the lack of image stabilization—something that the similar Sigma 150mm F2.8 EX DG OS HSM APO Macro($1,489.00 at Amazon) does include. The lens is very long, but not overly wide—it measures 7.3 by 3.3 inches and is heavy at 2.4 pounds. A tripod collar, which wraps around the lens near its base, is included. It's a good idea to use it rather than your camera's tripod socket,...
The EF 180mm Macro f/3.5L is a sharp telephoto macro lens for Canon D-SLRs. It supports 1:1 magnification, but lacks image stabilization.
Very sharp; 1:1 magnification; Includes hood and tripod collar
Expensive; Lacks image stabilization