Optical transfer function: Difference between revisions

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Generally, the optical transfer function depends on factors such as the spectrum and polarization of the emitted light and the position of the point source. E.g. the image contrast and resolution are typically optimal at the center of the image, and deteriorate toward the edges of the field-of-view. When significant variation occurs, the optical transfer function may be calculated for a set of representative positions or colors.

Sometimes it is more practical to define the transfer functions based on a binary black-white stripe pattern. The transfer function for an equal-width black-white periodic pattern is referred to as the '''contrast transfer function (CTF)'''.<ref name=CTF >{{cite web |title=Contrast Transfer Function|url=http://www.microscopyu.com/articles/optics/mtfintro.html|accessdateaccess-date=16 November 2013}}</ref>

==Examples==