TY - GEN
T1 - Out-of-focus point spread functions
AU - Dietz, Henry Gordon
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84901744862&partnerID=8YFLogxK
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U2 - 10.1117/12.2040490
DO - 10.1117/12.2040490
M3 - Conference contribution
AN - SCOPUS:84901744862
SN - 9780819499400
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Proceedings of SPIE-IS and T Electronic Imaging - Digital Photography X
T2 - Digital Photography X
Y2 - 3 February 2014 through 5 February 2014
ER -