quote=Schewe,Jan 18 2008, 08:44 PM]
I have no problem accepting the words of Thomas and Chris...they obviously know more than I about the subject[/quote]
Jeff, this entire discussion is totally inconsequent. Does it really matter if the raw image has a color space or not? Not the very least, *except* for a better understanding of the subject in general.
Therefor one should not accept anyone's word as a deus ex machine, but one should try *reasoning* to come to a result. This starts with the very basics, like
a camera sensor will have different spectral responses from different spectral sources
the sensor has only *one* spectral response per channel. The spectral response includes the response of the sensels of a given channel *for all visible light waves*. In other words, the spectral response shows, how the sensor behaves with *any* light source.
Hence the difficulties for creating a profile for a digital camera
The source of difficulties is, that the transformation between the camera's color space and another one (basically CIE, as that is the starter point for the others) is not as straightforward, as it is with the "artificial" color spaces, which have been defined just so, that they can be transformed to and from CIE via a matrix multiplication.
Look at the spectral responses of the three channels of different cameras and see, how different these responses are. Do you believe, that these can be described with only nine parameters? The transformation based on the conversion matrices is an approximation, sometimes better, sometimes worse.
I'n not convinced a camera has a fixed "color space" either...which is why ya gotta adjust for the white balance of the raw file
For the sake of your own understanding, do you mind explaining what you mean with the adjustment for white balance?