Mamiya Sekor C 150mm f/3.5 N - Mamiya M645-mount

The Sekor C 150mm f/3.5 N is a compact telephoto lens for the Mamiya M645 system. The 'N' designation identifies it as the newer version, featuring a revised optical design and a more modern plastic-bodied barrel which reduces weight compared to the earlier all-metal versions. It provides a natural perspective for portraiture, equivalent to about 93mm in the 35mm format. Examine the lens for any play in the barrel construction, as the 'N' series uses more polycarbonate than its predecessors. The focus should be smooth throughout the range, and the built-in retractable lens hood should be checked for cracks. SDS verifies the optics are clear of scratches and haze, and confirms the aperture blades are clean and function correctly in both manual and auto modes.