This thread reminds me the thread on the Adobe Camera Raw forum that was set to read only by the forum administrator because of abusive ad hominem attacks on the participants. Schewe's characteristic shouting and bullying is not unlike the tone of that thread.
Ironically, I never posted in that thread...so I guess Mr. Janes is trying to paint me with a brush of "similarity"...
"shouting and bullying"? Strikes me that THAT is an ad hominem attack...
Never the less, I thought I would show some images to help make my points. Here's a few images from RWCR CS3 showing some rarely seen real raw images:
The image above is a real raw image, processed but not demosiaced. It was processed through DNG Verifier to show what the image looks like when written to disk...
Here's the same image processed through Camera Raw.
So, what color space is the original grayscale raw image in? The actual raw image is indeed grayscale until the image is demosiaced...and not only is it grayscale, it's in linear gamma.
You see the tiny green rectangles? Here are some details from those areas...
The image above is taken from the original file processed through DNG Verifier then blown up in Photoshop to 3,200 % zoom. You can actually see the original Bayer array pixels. You'll note that the dark pixels in the area that is actually yellow shows the blue pixel photo sites.
This is the same area of pixels shown in the detail image above. The grayscale tones have now been interpolated into color information. It is this demosiacing interpolation that gives color information to the grayscale pixels.
So, again, in terms of the RAW file before demosiacing interpolation, what would be the "camera color space"? In actuality, it has no color space until the manner of demosiacing interpolation is determined and the tags regarding white point are provided and factored into the interpolation.
Even then those tags are subject to interpretation...what the original raw does have is a spectral response based on the properties of the Red, Green & Blue separation filters that are used to filter the white light to capture the RGB response properties, but that data is held in B&W until demosiacing.
So, ya still think that the original raw capture has a color space?