• SMPTE 243M-1993

SMPTE 243M-1993

  • Motion-Picture Equipment - 35- and 70-mm Projection Lenses and Mounts (R1998)
  • standard by Society of Motion Picture and Television Engineers,
  • Category: SMPTE

$50.00 $25.00

This standard specifies the lens markings, focal length tolerances, mounting diameters, mechanical factors in mounting additional lens adapters to lenses, and the preferred value steps in focal lengths for lenses used in 35- and 70-mm motion-picture projectors . (Focal length referred to in this standard is the equivalent focal length, commonly known as EFL.)This standard also specifies the limiting or maximum available space for projector lens mounts where lenses of varying focal lengths and designs and attachments thereto are used.
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