"The C Sonnar T* 1.5/50 ZM lens is the modern technological reincarnation of the classical Sonnar 1.5/50, the fastest standard lens of its time, for the Contax II rangefinder camera. It is fast, very resistant to flaring and unusually compact - therefore the ""C"" in the lens name. With its well controlled distortion, the lens produces a very accurate representation of objects. It can take the same filters which fit the ZM wide angle lenses with 28, 25 and 21mm focal lengths. This is a very versatile lens for photojournalistic work in general and for available light photography in particular.|Virtually zero geometric distortion for accurate reproduction of object shapes, particularly products and architecture|Reduces unintended focus shift with aperture variation for improved accuracy of rangefinder defined focus|Precise 10-blade aperture with 1/3 stop interval click stops ensures exact exposure|Wear resistant filter mount for long-term reliability in tough conditions|Highly advanced flare control that ensures crisp, brilliant images|Extremely accurate rangefinder coupling mechanism ensures optical precision, contributing to superior image quality"