Elmarit-S 30mm f2.8 ASPH CS
Wide-angle Medium Format Lens
The Leica Elmarit-S 30mm f/2.8 ASPH CS Lens is a wide-angle prime lens designed for use with Leica S-series medium format digital cameras. It provides a wide-angle 35mm-equivalent focal length of 24mm, ideally suited to interior, architecture, and landscape shooting. This is combined with a maximum aperture of f/2.8 that offers control over focus position for shallow depth of field imagery and also benefits working in dim lighting conditions with available light. The CS version of this lens incorporates a central shutter within the lens design to benefit working with high-speed flash sync at any shutter speed, up to the maximum of 1/1000 sec.
The optical design uses five elements with anomalous partial dispersion and three low-dispersion fluoride elements to reduce chromatic aberrations. Three high-refractive index and two aspherical elements are also integrated into the construction to minimise monochromatic aberrations and improve the overall image sharpness and clarity. The rear-most six elements are moved in order to control focus, maintaining a constant lens length while focusing as closely as 50 cm away.