Talk:Point spread function

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Here, "3D" is not in the sense of Stereoscopy, which is a (subjective) optical effect. Fluorescence microscopy really registers three dimensional distributions. Default007 08:31, 30 January 2006 (UTC)


When will you see diffraction rings in a PSF and when will you not? In photography, bokeh generally doesn't show it but microscopy seems to. Does it appear when you approach the diffraction limit? Is it Fraunhofer diffraction or Fresnel diffraction? (talk) 16:40, 7 December 2007 (UTC)


the image formation process is linear in power and described by linear system theory. This means that when two objects A and B are imaged simultaneously, the result is equal to the sum of the independently imaged objects. In other words: the imaging of A is unaffected by the imaging of B and vice versa, owing to the non-interacting property of photons.

Since photons have been scientifically been proven to interact, the explanatory conclusion is outdated. Thus, my question is: what has been attempted to be explained with the 'other words'?

Kenneyw (talk) 22:10, 26 November 2011 (UTC)

^ That is wave-form of photons. I think the OP was talking about interference but then summing A and B would not keep OP's last line true. — Preceding unsigned comment added by (talk) 08:36, 16 February 2012 (UTC)

Motion-blur Correction[edit]

I leave it to other editors to decide if this is noteworthy, but Adobe says they implement a PSF to help in correction of motion-blurred images as demonstrated here, although the details are limited. nakomaru (talk) 23:47, 5 October 2012 (UTC)

Theory Discuss[edit]

I like the argument presented here: The FT of a uniformly illuminated circle creates an airy disc, therefor the FT of an airy disc is a uniformly illuminated circle. However, in this discussion there is the term: kr tan(Θmax), but I believe it should be kr sin(Θmax) to match what the FT of a circle aperature is. Is there a reference for the expression of kr tan(Θmax) used in this article? Maqifrnswa (talk) 04:57, 16 March 2013 (UTC)

Theory: explanation of θ_max,r required[edit]

I think adding a ray diagram explaining terms like θ_max and r will be more helpful in understanding the process of partial interception of spherical wave field by lens. For example, r described as "..r is radial distance in the image plane.." does not clarify which radial distance has been mentioned here. — Preceding unsigned comment added by (talk) 11:25, 27 April 2013 (UTC)

Airy Function equal to J1(x)/x?[edit]

Can you either provide a reference for this statement: " In addition, a uniform function over a circular area (in one FT domain) corresponds to the Airy function, J1(x)/x in the other FT domain, where J1(x) is the first-order Bessel function of the first kind. " or correct it? Airy function is not quite what you say it is... Clejan (talk) 18:25, 31 March 2014 (UTC)