Corfield Lumar 100mm f/4 M39 Lens + Matched Viewfinder – Boxed – Leica LTM Fit

Description:

Rare Corfield Lumar 100mm f/4 telephoto lens in M39 Leica thread mount, complete with its matched auxiliary viewfinder and original box. This British-made lens is in excellent condition, with clean optics and smooth focus. Aperture blades are snappy and oil-free. The matched viewfinder is bright and clear, designed specifically for accurate framing with this focal length.

The Lumar 100mm f/4 was produced by Corfield for use with their Periflex cameras, but it’s fully compatible with any LTM body including Leica, Canon, and FED/Zorki. Its compact design and classic rendering make it a standout choice for collectors and shooters alike.

Key Features:

• Focal Length: 100mm
• Aperture: f/4–f/22 (manual control)
• Mount: M39 Leica Thread Mount (LTM)
• Focus: Manual, smooth helicoid
• Optics: 4-element design, coated glass
• Viewfinder: Matched auxiliary finder for 100mm framing
• Build: All-metal construction, British engineering
• Compatibility: Leica III series, Canon rangefinders, Soviet LTM bodies

Included:

• Corfield Lumar 100mm f/4 lens (M39)
• Matched 100mm auxiliary viewfinder
  
• Front and rear lens caps 

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Collector Notes:

Corfield was a pioneering British camera manufacturer in the 1950s–60s, known for its Periflex series and precision optics. The Lumar 100mm f/4 is one of the rarer telephoto offerings in M39 mount, and boxed examples with the original viewfinder are highly sought after. Its rendering is soft yet contrasty—perfect for portraits or period-correct shooting.