Leica APO-Summicron-M 35mm f/2 ASPH. - Leica M-mount

The APO-Summicron-M 35mm f/2 ASPH. represents a significant optical achievement, bringing apochromatic correction to the 35mm focal length in a very compact housing. It features a close-focusing distance of 0.3 metres, expanding its utility for detailed work. The lens provides extreme sharpness and contrast across the entire frame from wide open. Its design includes three aspherical surfaces and specialised glass types to ensure minimal distortion and aberration. Due to the complex mechanical design required for the 0.3m close focus, the focus ring should be tested for a smooth transition through the detent at 0.7m. SDS checks that the lens is optically centred and free from internal debris. The brass barrel is robust, but we inspect for any signs of external wear or impact that might affect the precision alignment of the elements. The built-in hood should also be checked for smooth extension.