The fast Fourier transform is used in two-dimensions to calculate the apodizing effect of a center opening pupil shutter. Two shutter models are investigated and compared, a circular shutter with diameter a function of time, and a five-bladed leaf-type shutter. The influence of shutter shape, defocus, and third and fifth order spherical aberration on the time-averaged optical transfer function is investigated. The results indicate that there is only a small effect on resolution and depth of focus due to shutter motion in a well corrected optical system.
Library of Congress Subject Headings
Fourier transformations; Camera shutters--Testing; Photographic optics
Department, Program, or Center
School of Photographic Arts and Sciences (CIAS)
Pierce, Jan, "Calculation of the time averaged optical transfer function by the fast Fourier transform" (1976). Thesis. Rochester Institute of Technology. Accessed from
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