Ricoh 50mm F/2 Rikenon P Manual Focus Lens For Pentax K Mount Review

The Ricoh 50mm F/2 Rikenon P is a legacy manual focus lens designed for Pentax K mount cameras. Originally produced in the 1970s and 80s, this lens represents Ricoh's contribution to the classic nifty fifty category. With a maximum aperture of F/2 and a 52mm filter thread, it offers a standard field of view on full-frame sensors and a short telephoto perspective on APS-C bodies.

As a used legacy optic, this lens is best suited for photographers who appreciate manual focus shooting and want an affordable way to explore vintage glass on modern Pentax DSLRs or mirrorless cameras with adapters. The F/2 aperture provides decent low-light capability and reasonable background separation, though it won't match modern autofocus alternatives in speed or optical correction. Build quality is typical of the era, with an all-metal construction that feels solid but lacks modern weatherproofing or electronic communication with the camera body.