Some MTF Routines For The Assessment Of Photographic Lenses

F. J. P. Consitt

doi:10.1117/12.954005

1 June 1974 Some MTF Routines For The Assessment Of Photographic Lenses

F. J. P. Consitt

Proceedings Volume 0046, Image Assessment and Specification; (1974) https://doi.org/10.1117/12.954005
Event: Image Assessment and Specification, 1974, Rochester, United States

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.

Citation Download Citation

F. J. P. Consitt "Some MTF Routines For The Assessment Of Photographic Lenses", Proc. SPIE 0046, Image Assessment and Specification, (1 June 1974); https://doi.org/10.1117/12.954005

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