Diffraction limit

Started 3 months ago | Discussions thread
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jonas ar
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Diffraction limit
3 months ago

Diffraction sets the theoretical resolution maximum of an optical system. Upon www browsing I have encountered several different estimations on how small (or large) pixels have to be before no further gain in terms of resolution can be achieved due to diffraction. It seems that many forget the Bayer array present on most sensors when they calculate the limit.

I thought this forum would be a nice place to have a reference for the definitive number So please go ahead if you have some thoughts on the subject.  I can provide an image sample from my Sony 135/1.8 lens shot at approximatly f/3.6 on a sensor with a pixel pitch of 1.54µm and the same lens at f/4 on a sensor with 5.9µm pixels as a starting point. Both taken from the same place approxiametly 11m from the subject. I hope it is obvious which is which

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