Leica's fast wide prime — the APO-Summicron-SL 28mm f/2 ASPH autofocus lens for L-Mount.
The Leica APO-Summicron-SL 28mm f/2 ASPH was released in 2023 as part of Leica's APO-Summicron-SL series of autofocus prime lenses for the SL system and the wider L-Mount. The APO-Summicron-SL line was built to a consistent apochromatic optical standard across several focal lengths, and the 28mm added a moderate wide-angle option to that group for full-frame L-Mount cameras.
This is an autofocus L-Mount lens with a 28mm focal length and an f/2 maximum aperture, using aspherical elements and an apochromatic (APO) correction scheme to control chromatic aberration. It is designed for Leica's full-frame SL bodies and is also usable on other L-Mount cameras from the alliance. The filter thread is 67mm, shared across much of the APO-Summicron-SL line. Confirm minimum focus distance and weight against the specific copy.
The apochromatic design targets high sharpness and low colour fringing across the frame from the maximum aperture. At 28mm on full frame it suits reportage, street, travel and landscape work where a compact fast wide is wanted, and the f/2 aperture allows some subject separation and low-light capability. Autofocus is internal and quiet, making it suitable for both stills and video on SL bodies.
As a recent lens the used market is limited and prices stay near retail. Inspect the front element and filter thread for damage, confirm autofocus drives smoothly and quietly, and check the weather-sealing gasket at the mount. Verify the lens reports correctly on an L-Mount body and that firmware is current. Confirm the hood and caps are present, and check the barrel for any impact marks that could affect the internal focusing group.