SMC Pentax-M 135mm f/3.5

SMC Pentax-M 135mm f/3.5 - Good Condition | Classic Telephoto Prime in Pentax K Mount

The SMC Pentax-M 135mm f/3.5 is a beautifully crafted telephoto prime from Asahi’s celebrated SMC Pentax-M lens lineup — a sharp and capable optic that delivers pleasing subject compression and reach that is ideal for portrait, wildlife, and everyday telephoto photography. The SMC (Super Multi-Coating) delivers exceptional contrast, colour accuracy, and flare resistance that places it among the finest coated lenses of its era. The M designation indicates Pentax’s compact and lightweight M-series design philosophy — delivering excellent optical performance in a noticeably slimmer and lighter package than its predecessors. 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 6069869.

Key Features

• 135mm focal length — classic telephoto perspective for portraits, wildlife, and distant subjects
• f/3.5 maximum aperture for good low-light performance and pleasing background separation
• SMC (Super Multi-Coating) for exceptional contrast, colour accuracy, and flare resistance
• Compact M-series design — slimmer and lighter than previous Pentax telephoto primes
• 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 135mm f/3.5 is one of those telephoto primes that Pentax photographers seek out with genuine enthusiasm. The Super Multi-Coating delivers outstanding contrast and colour accuracy, the 135mm perspective gives you pleasing portrait compression and useful wildlife reach, 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 characterful and highly capable telephoto prime.”

What’s Included

• SMC Pentax-M 135mm f/3.5 lens (Pentax K mount)
• Front and rear lens caps

Technical Specifications

• Brand: Asahi Optical Co. (Pentax)
• Model: SMC Pentax-M 135mm f/3.5
• Serial Number: SR 6069869
• Mount: Pentax K
• Focal Length: 135mm
• Maximum Aperture: f/3.5
• Minimum Aperture: f/22
• Lens Construction: 4 elements in 4 groups
• Angle of View: 18°
• Minimum Focus Distance: approx. 1.5m
• Filter Thread: 49mm
• Construction: All-metal barrel
• Type: Prime Lens
• Category: Lenses
• Condition: Good Condition