SMC Pentax-M 50mm f/1.7

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

The SMC Pentax-M 50mm f/1.7 is a beautifully crafted and highly regarded standard prime from Asahi's celebrated SMC Pentax-M lens lineup — a sharp, fast, and compact optic that delivers exceptional image quality with the natural rendering quality that Pentax glass is universally renowned for. The SMC (Super Multi-Coating) delivers exceptional contrast, colour accuracy, and flare resistance, while the M designation indicates Pentax's compact and lightweight M-series design philosophy — delivering excellent optical performance in a noticeably slimmer and lighter package. The fast f/1.7 maximum aperture delivers beautiful background separation and outstanding low-light performance. 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 via adapter. Serial number SR 2919644.

Key Features

• 50mm focal length — classic standard perspective for portraits, street, and everyday shooting
• Fast f/1.7 maximum aperture for outstanding low-light performance and beautiful background separation
• SMC (Super Multi-Coating) for exceptional contrast, colour accuracy, and flare resistance
• Compact M-series design — slim and lightweight everyday prime
• Pentax K mount — compatible with all Pentax K mount film and digital bodies
• 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 those lenses that Pentax photographers seek out with genuine enthusiasm. The Super Multi-Coating delivers outstanding contrast and colour accuracy, the f/1.7 aperture gives you beautiful subject separation and outstanding low-light capability, and the compact M-series design keeps the overall package slim and lightweight. On a modern Pentax digital body or mirrorless via adapter it's a genuinely rewarding everyday prime."

What's Included

• SMC Pentax-M 50mm f/1.7 lens (Pentax K mount)
• Front and rear lens caps

Technical Specifications

• Brand: Asahi Optical Co. (Pentax)
• Model: SMC Pentax-M 50mm f/1.7
• Serial Number: SR 2919644
• 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: approx. 0.45m
• Filter Thread: 49mm
• Construction: All-metal barrel
• Type: Prime Lens
• Category: Lenses
• Condition: Good Condition