Neptune Convertible Art Lens System - Nikon F Mount - Silver (Special Order Only)

Product available by special order only -> info@embaixadaporto.com

A handcrafted Art Lens System with three interchangeable front lenses and two aperture mechanisms for unlimited creative possibilities.

€239.00
Tax included
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Technical Specifications

  • Mount type: Nikon F
  • Lens Focal length: 35mm, 50mm, 80mm, front lens group convertible
  • Front lens group mounting mechanism: bayonet mount
  • Aperture type: multi-scaled Diaphragm + drop in aperture plate
  • Multi-scaled diaphragm aperture: 35mm: extended and f/3.5 - f/22, 50mm: f/2.8 - f/22, 80mm: extended and f/4-f/22
  • Field of View: 35mm: 63°, 50mm: 46°, 80mm: 30°
  • Filter Thread: 52mm
  • Focusing Mechanism: Helicoid
  • Closest Focusing Distance: 0.25m (35mm), 0.4m (50mm), 0.8m (80mm)
    • Macro Adapter: 0.18m (35mm), 0.22m (50mm), 0.5m (80mm)
  • Lens Construction: Lens base: 3 elements in 3 groups, Front lens group: 4 elements in 4 groups for each focal length
  • Multi coating: Yes
  • Electronic Contacts: No
  • Lens body: Aluminum

Equivalent Focal Length

APS-H : 1.3x Crop Factor

  • Proteus 4.0/80 Art Lens equivalent focal length = 104 mm
  • Despina 2.8/50 Art Lens equivalent focal length = 65 mm
  • Thalassa 3.5/35 Art Lens equivalent focal length = 45.5 mm

APS-C (Nikon, Sigma, Pentax) : 1.5x Crop Factor

  • Proteus 4.0/80 Art Lens equivalent focal length = 120 mm
  • Despina 2.8/50 Art Lens equivalent focal length = 75mm
  • Thalassa 3.5/35 Art Lens equivalent focal length = 52mm

APS-C (Canon) : 1.6x Crop Factor

  • Proteus 4.0/80 Art Lens equivalent focal length = 128 mm
  • Despina 2.8/50 Art Lens equivalent focal length = 80 mm
  • Thalassa 3.5/35 Art Lens equivalent focal length = 56 mm

Micro 4/3 : 2.0x Crop Factor

  • Proteus 4.0/80 Art Lens equivalent focal length: 160 mm
  • Despina 2.8/50 Art Lens equivalent focal length: 100 mm
  • Thalassa 3.5/35 Art Lens equivalent focal length: 70 mm
1 Item

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