Leica's telephoto for the S-system — the APO-Tele-Elmar-S 180mm for professional medium format.
The Leica APO-Tele-Elmar-S 180mm f/3.5 CS is a professional telephoto prime for Leica's S medium format system. The APO designation indicates full apochromatic correction for zero chromatic aberration. The CS designation indicates central shutter — a leaf shutter built into the lens for flash synchronisation at all speeds. Designed for professional fashion and portrait photography.
Optical performance is reference-class — Leica APO quality on medium format. Sharpness is extraordinary with virtually zero chromatic aberration. The 180mm focal length on the 30x45mm S sensor provides approximately a 140mm equivalent perspective — ideal for portraiture. The integrated leaf shutter enables flash sync at any speed, critical for studio work.
Leica S mount. Weight is approximately 1,200 grams. Build quality is the absolute finest — Leica professional S-system engineering from Germany. The central shutter operates alongside the camera's focal plane shutter. Autofocus is available. The S system represents Leica's professional medium format ecosystem, competing with Phase One and Hasselblad.
Extremely rare and expensive on the used market — the Leica S system is a niche professional ecosystem. Check CS shutter operation, AF accuracy, and all optical elements. The APO-Tele-Elmar-S represents the pinnacle of medium format portrait optics. Only relevant to existing Leica S system owners or studios investing in the system.