OMP 1-45-1 45mm f/4 21x is USSR micro lens for projection devices.
Frame size 22.5x32cm
Achromatization range - 486-656nm
Labour costs - not more than 150 man of hours.
Cinema microfilming lens. It was originally made for 35mm microfilming projection for vintage Soviet Russian professional equipment with highest precision and quality control. Was made on base of the well known 35mm cinema lens OKS1-40-1, but also was technically improved - to produce more resolution (the actual resolution is 85/45 lines). Fully covering APS-C sensor size and due to the short back focal flange distance, might be only used on mirrorless cameras. Has no iris aperture, so it is fixed.
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Posted by: SharkDD Date of publication: 12.11.2016