Leicameter

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MR-4.jpg

  • Code names - Leicameter -2 -M -MC -MR, 14217-chrome - 14218-black (as shown) - Leicameter MR-4
  • Production era - 1951-1987 (1967-1987 MR-4)
  • Manufacturer - Metrawatt Company of Nurnberg, Germany
  • Type - Small, shoe-mount CdS meter with on /off slide switch on top for non-interference with the M4 rewind crank. It has ISO range of 6–1600 and is coupled to the shutterspeed dial which just leaves the aperture to be set.
  • Variants - Black or silver versions
  • Power supply - Originally by mercury PX625 1.35 batteries; now with zinc-air Wein EPX-625 Cells.
  • Evolution - Preceded by Metraphot /MF or Leica-meter (NY 1951) f/1.4-22, Leicameter 3 (1934), Leicameter MC (1957) and Leicameter MR (first CdS type in 1966 - it was 5 mm longer than MR-4)
  • Size (l d h) - 71 x 31 x 20 mm / 2.8 x 1.2 x 0.8 in
  • Weight - 76.2 g /2.7 oz
  • Designers - Ludwig Leitz, Heinrich Broschke and Otto Sanger
  • Reference - Page 91 and 92 of Dennis Laney's Leica 1984 Accessory Guide courtesy of Mike Butkus

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