Chinon's standard zoom for Pentax K — the 35-80mm f/4-5.6 budget zoom.
The Chinon 35-80mm f/4-5.6 for Pentax K mount is a basic standard zoom from the defunct Chinon brand. The Pentax K mount compatibility is the sole practical advantage — access to Pentax DSLRs with in-body SR stabilisation. The 35-80mm range and slow variable aperture are basic specifications with no distinguishing features.
Basic optical quality. The slow f/4-5.6 limits use. Sharpness acceptable stopped down. The 35-80mm range lacks wide-angle coverage. Build quality is basic. The Pentax K mount with body SR is the only practical advantage — stabilisation with any K-mount lens. Chinon is defunct with no support.
Pentax K mount — the main advantage. Weight varies. Build quality is basic. Manual focus. Benefits from Pentax in-body SR. The K mount ensures compatibility with all Pentax bodies. The Chinon quality is basic but the body SR compensates at telephoto for handshake.
Very cheap. The Pentax K mount with body SR is the only value. Not recommended when better K-mount options exist at similar prices. Better Pentax or Sigma K-mount zooms available. Only if completely free. The K mount and body SR provide the sole practical utility.