SMPTE ST 243:1993
$15.60
SMPTE Standard – Motion-Picture Equipment — 35- and 70-mm Projection Lenses and Mounts
| Published By | Publication Date | Number of Pages |
| SMPTE | 1993-03-22 | 4 |
Abtract:
This standard specifies the lens markings, focal length tolerances, mounting diameters, mechanical factors in mounting additional lens adaptors 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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