SMC PENTAX-M 50mm f/2 MF Prime Lens Pentax K Mount

SMC Pentax-M 50mm f/2 Lens (Pentax K Mount)
Vintage Standard Prime – Classic M-Series Compact Footprint, Signature Super-Multi-Coating & Tactile Manual Focus (Well-Used Condition / Lens Only)
The SMC Pentax-M 50mm f/2 is a legendary, ultra-compact standard manual-focus prime lens engineered natively for the enduring Pentax K-mount SLR system. Celebrated as one of the slimmest, most portable 50mm lenses of the analog era, the Pentax-M series was specifically designed to minimize bulk without sacrificing optical integrity. Delivering a highly versatile 50mm field of view that matches the natural perspective of the human eye, this lens is a timeless choice for street candids, travel snapshots, traditional film portraiture, and everyday walkaround documentation.

Despite its modest, lightweight profile, this vintage prime features an all-metal physical architecture built with the precise mechanical dampening characteristic of classic Pentax engineering. Its optical elements are treated with Pentax’s famous Super-Multi-Coating (SMC), which maximizes light transmission and effectively suppresses internal reflections to deliver rich contrast, balanced color rendering, and beautiful out-of-focus bokeh. Fully manual and highly tactile, this classic K-mount lens is exceptionally popular among traditional film shooters using Pentax K1000, ME Super, or MX bodies, as well as digital mirrorless photographers seeking a lightweight, character-rich vintage lens to adapt to modern camera bodies.

This vintage lens is being offered in well-used cosmetic condition. Please note that it is being sold as the lens body only; no front or rear lens caps are included.

Key Features & Vintage Optical Performance
Classic 50mm Standard Perspective: Provides a natural, distortion-free field of view that is highly adaptive for everything from street landscapes to close-up portraits.

Super-Multi-Coating (SMC) Technology: Treated with Pentax’s multi-layered lens coating to systematically eliminate surface reflections, ghosting, and flare, preserving excellent frame contrast under challenging lighting conditions.

Ultra-Compact M-Series Blueprint: Features a highly streamlined, low-profile pancake-adjacent barrel profile that keeps your camera rig completely balanced, agile, and easy to pack.

Universal Pentax K-Mount Native: Offers direct mechanical compatibility with decades of Pentax film and digital SLR bodies, alongside simple, cost-effective adaptability to modern digital mirrorless systems via third-party adapters.

Tactile All-Metal Construction: Built with an industrial black metal barrel assembly and a deeply ridged manual focus ring, providing a satisfyingly smooth and deliberate focus pull.

Hardware Inventory & Condition Diagnostics
Functional Mechanical State: FULLY OPERATIONAL. The mechanical manual focus ring turns smoothly across its entire range, the physical aperture selection ring clicks cleanly at every stop, the internal iris blades are dry and snappy, and the glass is clear of major performance-hindering blemishes.

Cosmetic Presentation: WELL-USED CONDITION. The external metal housing displays clear, visible signs of an active field life, including typical surface scuffs, paint wear along the knurled metal ridges, and standard aesthetic weathering.

Included Accessories:

SMC Pentax-M 50mm f/2 Lens (Pentax K Mount)

NO Front Lens Cap Included

NO Rear Lens Cap Included

Technical Specifications
Lens Classification: Vintage Manual Focus Standard Prime

Lens Mount Type: Pentax K-Mount Native

Focal Length: 50mm (APS-C Crop Equivalent: Approx. 75mm)

Maximum Aperture: f/2.0

Minimum Aperture: f/22

Focus Control Type: Manual Focus Only

Filter Thread Interface: 49 mm

Chassis Material: All-Metal Mechanical Assembly