Mamiya Sekor N/L A 150mm f/3.8 Leaf Shutter - Mamiya M645 Mount

This 150mm f/3.8 N/L lens is a specialised portrait-length optic for the M645 system featuring a built-in Seiko leaf shutter. This allows for flash synchronisation at all speeds up to 1/500th of a second, overcoming the limitations of the camera's focal plane shutter. It is the later 'N' version, benefiting from improved coatings and a more modern barrel design compared to the original 'C' series. Used examples require specific testing of the leaf shutter mechanism. SDS checks that all speeds fire accurately and that the cocking ring operates smoothly. We also verify the synchronisation cable socket is intact. Like many M645 lenses, we inspect for internal haze and ensuring the transition between the lens shutter and the camera body shutter functions correctly.