Mamiya-Sekor 55mm f/4.5 Seiko Lens for TLR, Black Review

The Mamiya-Sekor 55mm f/4.5 is a wide-angle lens designed for Mamiya's twin-lens reflex cameras, offering a 46mm filter thread and compatibility with classic TLR systems. This used optic ships with a Seiko shutter and is sold in bargain condition by KEH, which typically means visible wear and possible engravings, though it remains functionally sound for X-sync flash work. At $210, it sits in the affordable range for vintage TLR glass, making it accessible for shooters building out a Mamiya system or experimenting with wide perspectives on medium format film.

The 55mm focal length provides a noticeably wider field of view than the standard 80mm lens found on most TLRs, useful for environmental portraiture, interiors, or street photography where a bit more context in the frame is welcome. The bargain grade and engraved marking suggest this copy has seen use, so buyers should expect cosmetic imperfections and possibly limited shutter speeds beyond X-sync. For collectors or users willing to work within those constraints, it's a functional entry into wide-angle TLR shooting.