photoengraving
a process of reproducing graphic material by photochemical transference of the image onto a sensitized plate and developing in etched relief.
While letterpresses produced legible text, the photoengraving dots that formed pictures often bled or smeared and became fuzzy and indistinct.
EL-Nikkors : For photo enlargement.
APO-Nikkors for photoengraving
Cine Nikkor lenses for 16mm movie cameras
Repro-Nikkors for 35mm life size reproduction.
 See also: Group, Contrast, Time, Spot, Film
  
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