Quote:
Originally Posted by Camelopardalis
So...what you’re saying is that a mono sensor, with a colour filter over the pixels, is more sensitive than the same sensor with a colour filter array over it? At the pixel level? Are you sure about that?
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Of course at the individual pixel level, when filtered they are virtually the same.
But that misrepresents the reality of what goes on at the focal plane.
With a mono sensor you have more pixels collecting signal in the wavelength you are interested in.
Instead of one pixel in a Bayer cluster (4 pixels) picking up say red photons, you have four. i.e. 4x more detected signal for the same incoming flux.
P.S. There is no free lunch here. With a mono sensor you get more detected signal in R,G,B and even more so in Narrow band
(as you are not uselessly pre-filtering a filtered image) But you have to make 3 exposures to make a colour image...and that takes time.