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Proceedings Paper

Some MTF Routines For The Assessment Of Photographic Lenses
Author(s): F. J. P. Consitt
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Paper Abstract

Over the past few years, MTF measurements have been made on several hundred photographic lenses. Certain routines have emerged which reduce the number of measure-ments required to assess the general behaviour of a lens. Sets of through focus MTF response curves on axis, at half field, three-quarter field, and full field reveal the character-istics of the radial and tangential focal surfaces from which a focus setting may be chosen to give the best overall response for the specific requirements of the lens. A standard format of MTF curves through field at this focus setting is then obtained. For a quick assessment of a lens or for a comparison of several lenses in a production run, an ab-breviated test routine with the object and image slits at 45° orien-tation has proven useful. Examples of the application of these routines are given.

Paper Details

Date Published: 1 June 1974
PDF: 7 pages
Proc. SPIE 0046, Image Assessment and Specification, (1 June 1974); doi: 10.1117/12.954005
Show Author Affiliations
F. J. P. Consitt, Ernst Leitz Canada Limited (United States)

Published in SPIE Proceedings Vol. 0046:
Image Assessment and Specification
David T. Dutton, Editor(s)

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