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

The Ricoh 50mm F/2 Rikenon is a vintage manual focus lens for Pentax K mount cameras, available on the used market for around $38. As a legacy optic from Ricoh's film-era lineup, it offers a classic normal focal length with a moderately fast aperture, making it a budget option for shooters looking to experiment with manual glass on modern or classic Pentax bodies.

At this price point, it sits in the deep bargain tier of 50mm primes. Condition varies by listing, with examples ranging from good to excellent seen in the used market. The F/2 aperture provides decent low-light capability and shallow depth of field potential, though it trails the more common F/1.7 or F/1.4 offerings from the same era. Build quality is typical of 1970s and 1980s Japanese consumer lenses, with all-metal construction and straightforward mechanical operation. It's a sensible pick for film purists, Pentax K mount collectors, or digital users curious about vintage glass on a tight budget.