Rough Science Spectroscopy, Bayer Arrays, etc

[samirkharusi]

Pushing the envelope of pixel peeping. Yes, you can even check out the spectral behaviour of those Bayer arrays. Check out the last section:
http://www.samirkharusi.net/spectrograph.html
Now, why are the Red pixels so active in blue wavelengths and yet the color rendition of a standard 1Ds is still very decent?

[PeterLange]

Now, why are the Red pixels so active in blue wavelengths and yet the color rendition of a standard 1Ds is still very decent?

Because the spectral response of the sensor is shaped to represent a linear combination of the human cone sensitivities and the XYZ matching functions, respectively.  At least that should be the design goal:  http://www.outbackphoto.com/tforum/viewtop...hp?TopicID=1929

Don’t worry, such overlap finally speaks for a large gamut.

Peter

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[eronald]

Pushing the envelope of pixel peeping. Yes, you can even check out the spectral behaviour of those Bayer arrays. Check out the last section:
http://www.samirkharusi.net/spectrograph.html
Now, why are the Red pixels so active in blue wavelengths and yet the color rendition of a standard 1Ds is still very decent?
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Greetings Samir ! Fancy meeting you here !

Doesn't human vision have such a "second hump" ? Two camels and a dromedary - or is it the other way round ?

Edmund

[samirkharusi]

Greetings Samir ! Fancy meeting you here !

Doesn't human vision have such a "second hump" ? Two camels and a dromedary - or is it the other way round ?

Edmund
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Seems that the leakage of one color into another color's pixels depends on the camera model. The 20D is quite different from the 1Ds. I have added more data on a modified 20D, with its UV/IR blocker removed for astro use, bottom of:
[a href=\"http://www.samirkharusi.net/spectrograph.html]http://www.samirkharusi.net/spectrograph.html[/url]
The Infra Red also picks up different colors depending on wavelength. A color bar extending from 4000 to 10,000 Angstroms is shown.