Mamiya-Sekor 105mm f/3.5 D Seiko Lens for TLR, Black Review

The Mamiya-Sekor 105mm f/3.5 D is a telephoto lens designed for Mamiya's twin-lens reflex cameras, offering a longer focal length than the standard 80mm TLR lenses. This particular unit is sold by KEH in bargain condition with engraving, indicating visible cosmetic wear but functional optics. At $169, it sits in the used specialty lens market for photographers committed to the Mamiya TLR system.

The 105mm focal length delivers tighter framing and shallow depth of field compared to the standard TLR setup, useful for portraiture and selective focus work on medium format film. The f/3.5 maximum aperture is typical for TLR lenses of this era and focal length. Because this is a used item sold in bargain grade, expect cosmetic imperfections such as brassing, scuffs, or marks, though KEH's grading suggests the glass and mechanics remain serviceable. This lens is strictly for existing Mamiya TLR shooters looking to expand their kit with a telephoto option.