The Sigma 180mm f/2.8 APO Macro EX DG HSM OS is a high quality telephoto macro lens designed for Canon EF mount cameras. Key features include:

True 1:1 Macro. The Sigma 180mm f/2.8 APO Macro OS allows life-size reproduction of your subject. Its 18.5-inch minimum focusing distance makes it a great choice for small insects that may be skittish, yet still gives you a decent working distance.

Telephoto Focal Length. While it’s primarily meant for macro use, with the focus limit switch engaged it can be used for portraits and other telephoto uses.

HSM Focusing Motor. Provides ultra-quiet, fast autofocusing with full-time manual-focus override.

Optical Stabilization. The in-lens stabilizer unit provides up to four stops of correction for minimizing camera shake. We strongly recommend the use of a tripod when shooting 1:1 macro because no stabilizer will be good enough to enable handheld 1:1 macro.

Premium Optics. The 180mm f/2.8 APO Macro EX DG HSM OS uses three FLD glass elements for correcting color aberrations, as well as a floating inner focusing system to reduce field curvature and distortion. Ghosting and flare is eliminated via Sigma’s Super Multi-Layer coatings, which also provides images with more contrast and sharpness. Its 9-blade diaphragm allows for pleasing bokeh (background blur) whether shooting 1:1 macro or portraits, especially when shooting wide open.