Mamiya‑Sekor C 150mm f/3.5 N Lens for Mamiya 645 – Serviced – Excellent

Overview

The Mamiya‑Sekor C 150mm f/3.5 N is a compact telephoto prime for the Mamiya 645 system, known for its sharp rendering, smooth bokeh and reliable mechanical design. The later N‑version features improved coatings and refined optical performance. This example has been professionally serviced, ensuring smooth focusing, accurate aperture operation and dependable performance for both film and digital‑adapted use.

Condition

Overall Condition: Excellent – Serviced
• Optics clean with typical internal dust for age
• Aperture blades clean and snappy
• Focus helicoid smooth and correctly damped
• Aperture ring clicks positively
• Barrel shows light, honest cosmetic wear
• Mount clean and undamaged
• No operational faults observed

Included

• Mamiya‑Sekor C 150mm f/3.5 N lens
• Rear lens cap

Compatibility

• Mamiya 645 (original)
• Mamiya 645J
• Mamiya 645 Super
• Mamiya 645 Pro / Pro TL
• Mamiya 645E
• Adaptable to digital mirrorless systems with appropriate adapter

Key Features

• 150mm telephoto prime for Mamiya 645
• f/3.5 maximum aperture
• “N” version with improved coatings
• Smooth, serviced mechanics
• Excellent portrait and compression rendering
• Solid metal construction
• Ideal for studio, portrait and landscape work

Collectors Notes

The 150mm f/3.5 N is one of the most respected telephoto primes in the Mamiya 645 lineup, offering a strong balance of sharpness, contrast and portability. Serviced examples are increasingly valued due to the age of the system and the declining availability of technicians familiar with Mamiya’s helicoid and aperture assemblies.

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