SMC Pentax‑M 50 mm f/1.7 

SMC Pentax‑M 50 mm f/1.7 – Good Condition | Compact Fast Prime with Exceptional Sharpness and Color

Introduction

The SMC Pentax‑M 50 mm f/1.7 is a compact and beautifully made manual‑focus lens from the late 1970s, part of Pentax’s renowned M‑series. It’s celebrated for its superb optical quality, delivering crisp detail, rich color, and smooth contrast even at wide apertures. With its bright f/1.7 maximum aperture and solid metal build, this lens performs exceptionally well in both low‑light and portrait situations. Simple, reliable, and optically outstanding, it remains one of the most loved Pentax K‑mount lenses ever made.

Key Features

• Fast f/1.7 aperture ideal for low‑light and creative depth‑of‑field control.
• 50 mm focal length gives a natural field of view for portraits and general use.
• SMC (Super Multi Coating) enhances contrast and color fidelity while reducing flare.
• Compact, lightweight metal construction for reliable everyday use.
• Smooth, precise manual focus mechanism.
• Compatible with all Pentax K‑mount film and digital cameras (via manual mode).

Condition Report

Body: Good condition with minor cosmetic marks from normal use.
Optics: Glass clean and clear — no haze, fungus, or scratches.
Mechanics: Focus ring smooth and well‑damped; aperture blades clean and responsive.
Electronics: Not applicable (mechanical lens).
Shutter Count: Not applicable (lens only).

Specialist Note

“One of Pentax’s finest standard lenses: sharp, contrast‑rich and beautifully balanced — a must‑have for any K‑mount user.”

What’s Included

• SMC Pentax‑M 50 mm f/1.7 lens (serial no. 2911525)
• Front lens cap
• Rear lens cap

Technical Specifications

• Category: Prime Lens
• Mount: Pentax K mount
• Focal Length: 50 mm
• Maximum Aperture: f/1.7
• Minimum Aperture: f/22
• Optical Construction: 6 elements in 5 groups
• Coating: Super Multi Coating (SMC)
• Minimum Focusing Distance: 0.45 m (1.5 ft)
• Filter Thread: 49 mm
• Focus Type: Manual focus
• Dimensions: Approx. 63 × 31 mm
• Weight: Approx. 235 g