Leica Viewfinder for 21/24/28mm Lenses (Black)

Specifications:

• Principle: Inverse Galileo telescope
• Optical system: 5 elements in 5 groups, 2 lenses for adjusting the angle of view
• Viewfinder magnification:
  21 mm: 0.42x
  24 mm: 0.48x
  28 mm: 0.56x
• Optimum pupil distance: 15mm (Distance of pupil from last lens surface)
• Aperture: diameter 4mm
• Eyepiece: Rubber-coated mount with thread for M-System corrective lenses (+/- 3 dioptres)
• Coating: Single layer on all lens surfaces
• Housing: Round aluminum housing, aluminum foot with locking screw
• Dimensions: 1.9"(l), 1.4"(body diameter) (48.3mm, 36mm) / 1.5(w) x 1.8(h)" (39mm x 45mm)
• Weight: approx. 3 oz. (85g)