Leica APO-Summicron-SL 75mm f/2 ASPH Review

The Leica APO-Summicron-SL 75mm f/2 ASPH is a professional-grade short telephoto prime for the L-mount system. At $5,775, it sits in Leica's premium SL lineup and carries the APO designation, which signals apochromatic correction for superior color accuracy and minimal chromatic aberration. The f/2 maximum aperture and 75mm focal length make it a natural choice for portraiture, offering flattering compression and strong subject separation. As with other Summicron-SL lenses, this optic is built for demanding use on full-frame mirrorless bodies like the Leica SL2 and SL2-S, and it's compatible with other L-mount cameras from Panasonic and Sigma. The ASPH element indicates aspherical glass to control distortion and maintain sharpness across the frame. Given Leica's optical heritage and the Summicron pedigree, this lens is positioned for professionals and enthusiasts who prioritize image quality and build over budget.