Very Rare Corfield Retro-Lumax 35mm f/2.8 M42 Lens – Keeper – Very Minor Fungus

Description:

Extremely rare Corfield Retro-Lumax 35mm f/2.8 lens in M42 screw mount, complete with its original keeper case. Optics show very minor fungus, visible only under strong light—does not affect image quality in typical use. Focus is smooth, aperture blades are clean and snappy, and the lens body is in excellent cosmetic condition.

This British-made lens was part of Corfield’s limited Retro-Lumax series, designed for use with Periflex and other M42-compatible cameras. It features a classic 6-element design with rich rendering and vintage character. A true collector’s piece, especially in this condition and presentation.

Key Features:

• Focal Length: 35mm
• Aperture: f/2.8–f/22 (manual control)
• Mount: M42 screw thread (universal compatibility)
• Focus: Manual helicoid, smooth action
• Optics: Coated glass, 6-element design
• Build: Solid metal construction, British engineering
• Keeper: Original Corfield keeper case included

Condition Notes:

• Optics: Very minor fungus (edge area, minimal impact)
• Mechanics: Focus and aperture rings operate smoothly
• Cosmetics: Excellent overall with minimal wear
• Accessories: Keeper case included, caps if applicable

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Collector Notes:

Corfield lenses are seldom seen on the market, especially in M42 mount. The Retro-Lumax 35mm f/2.8 is a standout for its build quality and unique rendering. Minor fungus is common in lenses of this age and typically has no impact on performance. This example, boxed in its original keeper, is ideal for display, restoration, or use on digital mirrorless bodies via adapter.