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Proceedings Paper

Out-of-focus point spread functions
Author(s): Henry Gordon Dietz
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Paper Abstract

There are many ways in which the performance of a lens can be characterized, most of which measure properties of the in-focus image. The current work instead centers on measuring properties of an out-of-focus (OOF) image. The image created by imaging a point of light is commonly known as the point spread function (PSF). We have found that by measuring the OOF PSF a great deal of otherwise unavailable information about the lens can be obtained. The current work presents observations and sample images from measurements made on a collection of over 125 lenses. A variety of the attributes than can be obtained from study of OOF PSFs, and some of their applications, are discussed.

Paper Details

Date Published: 7 March 2014
PDF: 11 pages
Proc. SPIE 9023, Digital Photography X, 90230J (7 March 2014); doi: 10.1117/12.2040490
Show Author Affiliations
Henry Gordon Dietz, Univ. of Kentucky (United States)


Published in SPIE Proceedings Vol. 9023:
Digital Photography X
Nitin Sampat; Radka Tezaur; Sebastiano Battiato; Boyd A. Fowler, Editor(s)

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