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G-26 180 mm f/ 2.5 Lens

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G-26 180 mm f/ 2.5 lens

G-26 180 mm f/ 2.5 lens

G-26 180 mm f/ 2.5 lens

G-26 180 mm f/ 2.5 lens

Optical design

G-26 180 mm f/ 2.5 optical design

Format: APS-C (crop)

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: Other mount

Optical design: 6 elements 4 groups

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Average price: $1490

Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)
180mmf/2.5f/2218 952850/100,5145/5,7

Additional information:
  • Anastigmat type
  • Resolution center is 125 lines, the edge is 80 lines.
  • Case diameter (standard for projection lenses) 104mm
  • Diameter of the front lens 83.5mm
  • Diameter of the rear lens 70 mm
  • Forward focal length 80.51mm
  • Posterior focal length 138,1 mm
  • Angle of coverage of the lens 7°
  • The coating circle (the diameter of the image formed by the lens) is in the range 40-45 mm
G-26 1:2.5 F=180mm is prime lens for film projection apparatus working on a 35 mm film with a frame format of 15.2 × 20.9 mm.
 
Optical lens aberrations are corrected to such an extent that it can be used for color film.
 
Made by GOMZ (State Optical and Mechanical Plant, Leningrad, USSR) which was later renamed in LOMO.
 
Was produced in 60s and 70s. Not more than 50-100 pieces each year.

Posted by: SharkDD   Date of publication: 24.09.2017


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