Medium-Telephoto Macro Prime. The Panasonic Lumix S 100mm f/2.8 Macro’s medium-telephoto focal length, 1:1 magnification ratio, and 8-inch minimum focusing distance make it a stellar choice for portraiture and detailed close-ups, while its bright f/2.8 aperture and rounded nine-blade diaphragm produce pleasing circular bokeh.

L-Mount Alliance. This wide-diameter lens mount is a joint collaboration between Leica, Panasonic, and Sigma that’s focused on a line of premium cameras and lenses in a mirrorless format. With a 51.6mm mount diameter and just 20mm of flange distance, the L-mount is well-suited for fast-aperture full-frame optics with compact dimensions.

Linear Autofocus System. The 100mm f/2.8’s autofocus system uses a compact, newly developed dual-phase linear motor to provide fast, accurate, nearly silent performance that’s as great for video as it is for stills. The AF/MF switch lets you easily toggle between autofocus and manual-focus modes, and the focus-range selector switch lets you select 0.204 to 0.5m, 0.5 to Infinity, or FULL.

Premium Optics. This lens’s eleven-group/thirteen-element optical formula incorporates three aspherical elements, two ultra extra-low dispersion elements, and one extra-low dispersion element, which combine to reduce chromatic and spherical aberrations while producing sharp, clear, color-accurate images.

Compact Weatherproof Build. The lens barrel’s metal construction provides a solid, yet lightweight feel, while its splash-. dust-, and freeze-proof design lets you work with confidence in inclement weather conditions down to -14°F.