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SMPTE Journal ( Volume: 90, Issue: 2, February 1981)
[ACTIVE]

A Television and Film Lens-Testing System

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
90, No. 2, pp. 103–106
Abstract
Lens quality is a vital factor in obtaining good television pictures. The Independent Television Companies Association (ITCA) asked the Scientific Instruments Research Association (SIRA) to design an apparatus which, while having neither the absolute precision nor the range of possibilities of a laboratory instrument, would, nonetheless, make it possible to verify the degree of conformity of lenses with the standards established by the British television services. The resulting design comprises four components: a pinhole object generator, an analyzer unit, and an electronic unit. The equipment permits measurement of the modulation transfer function (MTF) of the lens, glare, stray light, paraxial transmission and spectral transmission, relative field illuminance, and transverse chromatic aberration. The units, which are easily transportable, can be used in production centers and allow the rapid measurement of the mentioned lens characteristics. Good correlation has been achieved between this equipment and other apparatus.
Publication Date
1981-02-01
DOI
10.5594/J01499
ISSN
Print: 0036-1682
Link
https://doi.org/10.5594/J01499
Author(s)
T. Wojtowicz
Copyright
© 1981 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1. “Specifications for Television and 16-mm Film Camera Lenses,” ITCA Studio Engineering Report No. 102/76 , 1976 . EXTERNAL
  • 2. “Specifications for Zoom Lenses,” BBC Document No. TV 1139 , Issue 1, 1976 (replacing TV 139C). EXTERNAL
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T. Wojtowicz; A Television and Film Lens-Testing System, SMPTE Journal ( Volume: 90, Issue: 2, February 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01499
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T. Wojtowicz; A Television and Film Lens-Testing System, SMPTE Journal ( Volume: 90, Issue: 2, February 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01499

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T. Wojtowicz; A Television and Film Lens-Testing System, SMPTE Journal ( Volume: 90, Issue: 2, February 1981); SMPTE, 1981. Available at https://doi.org/10.5594/J01499
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<span class="citation">T. Wojtowicz; <cite>A Television and Film Lens-Testing System</cite>, SMPTE Journal ( Volume: 90, Issue: 2, February 1981); SMPTE, 1981. Available at <a href="https://doi.org/10.5594/J01499" target="_blank" rel="noopener">https://doi.org/10.5594/J01499</a></span>

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Preview:
T. Wojtowicz; A Television and Film Lens-Testing System, SMPTE Journal ( Volume: 90, Issue: 2, February 1981); SMPTE, 1981
doi: 10.5594/J01499
url: https://doi.org/10.5594/J01499
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<li>
T. Wojtowicz; <cite id="bib-10-5594-j01499">A Television and Film Lens-Testing System</cite>, SMPTE Journal ( Volume: 90, Issue: 2, February 1981); SMPTE, 1981
<span class="doi">10.5594/J01499</span>
</li>