Pentax 50mm SMC Pentax-A 1:1.7 Manual Lens (1977-1984)
This is Pentax' standard standard lens of its era. It works on just about anything Pentax. You'll find many of these stuck on the fronts of the Pentax K1000 and the Pentax ME. Like almost all 50mm standard lenses, it is extremely sharp. Even better, it's a very handsome lens. It just looks right. Call us crazy, but remember that photography is a visual art. If you can't appreciate good industrial design, you're toast.
Lens Mount: Pentax K.
Optics: 6 elements in 5 groups. Pentax Super Multi-Coated.
Diaphragm: 6 blades, stops down to f/22. Full, and sometimes half-stop clicks.
Filter Thread: 49mm.
Close Focus: 1.5 feet (0.45m).
Maximum Reproduction Ratio: 1:12.5
Size: 2.5" diameter x 1.2" long (63 x 31mm), rated.