The Leica Summarit-S 70mm f/2.5 ASPH CS Lens is a high performance, standard focal length optic built exclusively for the Leica S Digital Camera System. Designed for professional applications, the lens guarantees outstanding color and contrast at all apertures and distances as close as 1.6' (0.5m). Highly refractive glass with anomalous partial dispersion provides image sharpness from edge to edge and a built-in front filter with environmental sealing protects the optic under harsh shooting conditions. An integrated focal plane shutter provides action-stopping flash sync up to 1/500th of a second.