Leica S-System

The Leica S-System is a medium format digital single lens reflect camera system introduced by Leica Camera in 1996. Beginning with the Leica S1, a prototype top-end studio digital camera unveiled at Photokina 1996. It went into production at the end of 1997.
Leica S lenses.
A series of new Leica lenses is manufactured specifically for the S2 and Leica claims they offer unsurpassed resolution and contrast at all apertures and focusing distances, even exceeding the sensor's capabilities. Lenses offered for the S2 include Summarit-S in normal (70 mm), wideangle (35 mm), and macro (120 mm) varieties, and Tele-Elmar (180 mm) portrait-length telephotos; these are available in versions that feature integrated multi-leaf blade shutters ("Central Shutter", or CS), in addition to the focal-plane shutter in the camera body, to enable higher flash sync speeds.