FZ200 Diffraction Limit - Panasonic Tech Service

Started Aug 27, 2013 | Discussions thread
Stephen Barrett Contributing Member • Posts: 683
Re: FZ200 Maximum Desirable F-Number to achieve adequate "Sharpness"

J C Brown wrote:

I'm pleased to hear that you are finding my report useful but as I have no idea why you would expect red to give the poorest resolution I'm puzzled by your statement "I find the graph of resolution for the different colours surprising".

The reason that I expected red to have the poorest resolution is that the Rayleigh criterion says the angular resolution is proportional to wavelength.

Visible violet ~ 400 nm
Visible red ~ 650 nm

So the violet end of the spectrum should be able to resolve the smallest angles and red should be poorest.

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