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"

(continuing previous post)

It occurred to me that a possible reason for red to have the best resolution (in J C Brown's graph) could be related to the sensor rather than the lens. I don't know much about sensors so I Googled "Bayer Array" and was reminded that there are equal numbers of red and blue pixels but twice as many green. So why would red resolve better than green when green has a shorter wavelength and also twice as many pixels as red in the array?

But I guess the green print does not match the wavelength of green in the light spectrum because it is a combination of the cyan, magenta and yellow inks in the printer cartridge. So, I am at a loss in trying to understand the colour-dependence of a camera's resolution.

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