Leica's premium APO-corrected 35mm f/2 for L-Mount — reference-grade optics with apochromatic correction.
The Leica APO-Summicron-SL 35mm f/2 ASPH was released in 2019 as part of Leica's original APO-Summicron SL prime trio for L-mount, providing apochromatic (APO) chromatic aberration correction across all three primary wavelengths. Thirteen elements in 11 groups with five aspherical surfaces. At 750g and 67mm filter thread. 0.27m MFD. Nine rounded aperture blades. Compatible with all L-mount bodies.
The optical design uses 13 elements in 11 groups with 5 aspherical surfaces. Nine rounded aperture blades. The 67mm filter thread. At 750g the lens is moderate. Minimum focus distance of 0.27m. APO correction for lateral and longitudinal chromatic aberration across RGB wavelengths. f/2 maximum aperture. Full-frame coverage.
The APO designation on the SL 35mm indicates full apochromatic correction — lateral chromatic aberration is corrected across the three primary wavelengths, not just at specific wavelengths like non-APO designs. This reduces colour fringing on high-contrast edges that is visible in non-APO fast primes at wide aperture. The 0.27m MFD enables close environmental 35mm compositions that standard 35mm primes at 0.30m+ cannot reach.
On the used market the Leica APO-Summicron-SL 35mm f/2 ASPH is available at Leica SL premium prime pricing. Condition checks: AF response, 67mm front element for marks, manual focus ring smoothness. Compatible with all L-mount bodies: Leica SL/SL2/SL2-S, Panasonic LUMIX S, and Sigma FP/FP L.