RE: Color in Safari
RE: Color in Safari
- Subject: RE: Color in Safari
- From: Roger Breton <email@hidden>
- Date: Fri, 15 Oct 2010 23:07:30 -0400
Hi Graeme,
My model of a digital cameras resembles that of scanners. Perhaps the
comparison is not really valid but, since scanners use RGB filters that
themselves limit the range of colors that can be detected by the sensor, I
thought, naively perhaps, that filter arrays in a digital camera sensor,
ought to suffer from the same limitation. But I realize that cameras don't
have gamuts as such. It's an interesting problem. Maybe I can argue that
most, if not all consumer digital cameras, render to some "form" of sRGB.
Would that get me off the hook?
Best / Roger
>
> Hi Roger,
> cameras don't have gamuts as such. If a particular wavelength is
> particularly bright, you can just adjust the exposure to bring it within
the
> range of values that don't clip. You may be in trouble in _encoding_ all
colors
> captured into a particular color space, with a given value as reference
white
> though (R=G=B= 100%), and maybe this is what you are referring to.
>
> Cameras can have metameric problems - their spectral sensitivities
probably
> don't match the standard observer, so there may be spectra that a camera
> perceives as identical that we can distinguish, and visa-versa.
>
> Graeme Gill.
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