Pentax SMC Pentax-M 50mm f/1.7

Pentax SMC Pentax-M 50mm f/1.7 - Good Condition | Classic Fast Standard Prime in Pentax K Mount

The Pentax SMC Pentax-M 50mm f/1.7 is one of the most celebrated standard primes from Pentax's respected M-series lens lineup — a sharp, fast, and beautifully built optic that delivers exceptional image quality with the characteristic natural rendering quality that SMC Pentax glass is universally renowned for. The SMC (Super Multi Coating) designation reflects Pentax's advanced multi-layer coating technology — delivering outstanding contrast, accurate colour rendition, and exceptional resistance to flare and ghosting. The M-series designation indicates a compact and lightweight design philosophy — making this one of the smallest and most elegant 50mm f/1.7 lenses ever produced. In Pentax K mount, it pairs naturally with the full range of Pentax K mount film and digital bodies and adapts effortlessly to modern mirrorless systems. Serial number SR 2956333.

Key Features

• 50mm focal length — classic standard perspective for portraits, street, and everyday shooting
• Fast f/1.7 maximum aperture for excellent low-light performance and beautiful background separation
• SMC (Super Multi Coating) for outstanding contrast, colour accuracy, and flare resistance
• Pentax K mount — compatible with all Pentax K mount film and digital bodies and mirrorless via adapter
• Compact and lightweight M-series design
• Manual focus operation with smooth, well-damped focus ring
• Solid all-metal construction of the highest quality
• A genuine classic from Asahi Optical Co.'s golden era of lens making

Condition Report

• Body: Good condition — light marks consistent with age and use, no cracks or damage to barrel or mount
• Optics: Elements clean and clear — no fungus, haze, or significant dust; SMC coatings intact
• Mechanics: Focus ring operates smoothly and precisely; aperture blades clean and snappy; mount clean and secure

"The SMC Pentax-M 50mm f/1.7 is one of the great standard primes of the vintage lens world. The Super Multi Coating delivers a contrast and colour accuracy that is immediately apparent, and the f/1.7 aperture gives you a beautifully rendered out-of-focus background at portrait distances. In the compact M-series barrel it's one of the most elegant 50mm lenses ever made — a genuine joy to use on any Pentax body or modern mirrorless via adapter."

What's Included

• Pentax SMC Pentax-M 50mm f/1.7 lens
• Front lens caps

Technical Specifications

• Brand: Pentax (Asahi Optical Co.)
• Model: SMC Pentax-M 50mm f/1.7
• Serial Number: SR 2956333
• Mount: Pentax K
• Focal Length: 50mm
• Maximum Aperture: f/1.7
• Minimum Aperture: f/22
• Lens Construction: 6 elements in 5 groups
• Angle of View: 46°
• Minimum Focus Distance: 0.45m
• Filter Thread: 49mm
• Construction: All-metal barrel
• Type: Prime Lens
• Category: Lenses
• Condition: Good Condition