Jon,
There is an easy way to find out things for yourself. Open an **8-bit**
CMYK image in Photoshop, use profile conversion to move it from
ISOcoated CMYK to LStar-RGB using colorimetric rendering. Look at the
histograms of that new image. Perhaps take some screenshots. Now go
back to your original image and do the same conversion to ProPhoto or
WideGamut. Compare the histograms. You will see that you use only a
fraction of what you used in LStar-RGB. You might see a loss of details
in your image, too. When working in a large gamut like ProPhoto you
have to use 16 bit in order to keep your details.
Am 01.06.2005 um 14:22 schrieb Jón A Sandholt:
This is a very interesting discussion, wich I have
been following with
great interest.
I have a question that relates to this topic.
How does bit depth ( 8 bit vs 16 bit etc.) relate to all this.We are
told that 8 bit color can give us about 16,7 million colors and 16 bit
something much more (I don't wont even try to do the calculations).I
know this is only in theory but lets say you have a 8 bit image in
ProPhoto RGB and one thats 16 bit in the same colorspace, is there a
difference between them as to how much part of the space they use?
What I'm trying to say is does a high bit image make a better use of a
large colorspace than the 8 bit one?
Am I missing some point here or misunderstanding something?
Thanks again for very intersting discussion.
Best regards.
Jón A Sandholt