Pentax SMC 50mm f1.7

The SMC Pentax‑M 50mm f/1.7 is a classic standard prime lens for Pentax K‑mount cameras, compatible with both 35 mm film and full‑frame digital systems. With its bright f/1.7 aperture, this lens delivers excellent low‑light performance and pleasing background separation for portraits and everyday shooting.

Thanks to the SMC (Super Multi Coating), the lens produces high contrast and natural color rendition, while minimizing reflections and flare. Manual focus is smooth and precise, and the metal construction feels robust and reliable.

The minimum focusing distance is approximately 45 cm, filter thread size is 49 mm, and the lens weighs about 190 g. This combination of compactness, optical quality, and character makes the Pentax‑M 50mm f/1.7 a popular choice among vintage Pentax lens enthusiasts.

The serial number of this lens is 2545761.
The aperture operates smoothly, and the glass is clear.