True 1:1 Macro. The Sigma 105mm f/2.8 DG DN Macro Art allows life-size reproduction of your subject. This lens’s 11.6-inch minimum focusing distance and 5.5-inch minimum working distance make it a great choice for photographing small insects that may be skittish. In addition, the rounded nine-blade aperture gives you super-smooth bokeh. Using an APS-C sensor camera? You’ll have a focal length equivalent to 157.5mm.

Advanced Optical Design. As a part of Sigma’s Art lens line, this lens goes through Sigma’s rigorous A1 testing to ensure high image quality. The 105mm f/2.8’s optics are quite impressive. Its seven-group/twelve-element design includes a Special Low Dispersion element that corrects for chromatic aberrations while ensuring high image sharpness, clarity, and contrast. A Super Multi-Layer Coating minimizes lens flare and ghosting to help produce high-contrast, color-accurate images.

Hyper Sonic Motor Autofocus System. The HSM autofocus system provides fast, quiet operation in a wide variety of shooting situations. It boasts an updated focusing algorithm for increased smoothness, and full-time manual focusing for quick fine-tuning. A built-in, programmable autofocus-lock button and focus-limiter switch give you even greater control over focus.

Additional Features. Sigma’s Art 105mm is weather sealed, making it dust and splash resistant. Its brass bayonet gives you improved mounting accuracy and rigidity. You can de-click the manual aperture ring for smooth, silent functionality when you’re shooting video, while the dedicated aperture-ring lock keeps your aperture setting from accidentally slipping.