ZEISS Biogon 35mm f/2 T* ZM - Leica M Mount

The ZEISS Biogon 35mm f/2 T* ZM is a fast wide-angle lens for the Leica M-mount. Known for its exceptional sharpness and lack of distortion, it uses a symmetrical Biogon design that is highly effective for documentary and architectural photography. It provides a slightly more modern, clinical look compared to the 'C' version, with an extra stop of light for better performance in dim conditions. Check the focus helical for smoothness; any grit or uneven resistance can hamper manual focusing on a rangefinder. SDS inspects the aperture blades for oil, which can cause sticking, though this is rare on this model. The 10-blade aperture should create circular out-of-focus highlights. Ensure the lens mounts securely and that the rangefinder cam shows no signs of uneven wear that could affect focus accuracy.