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Posted: 2003-01-31 04:17pm
by Pu-239
What's the point of 48bpp? I mean I can't tell the difference between 16bpp and 24bpp. And I don't think printers can output that many colors anyways. Also explain RGB and CMYK. I know RGB is used for display and CMYK is used for printing, but there are supposed to be minor quality differences. Please explain.
Posted: 2003-01-31 06:17pm
by Enlightenment
Split from the scanning thread.
The prime benefit of 48bpp is in increased dynamic range rather than in terms of distinguishable colors. It's possible to do much more severe curves, levels and constrast adjustments in 48bpp without the image getting washed out or blacked out. Another benefit of 48bpp is that it provides 65536 levels of true gray rather than the mere 256 gray levels provided by 24bpp. This is a big deal when dealing with grayscale images.
Posted: 2003-01-31 08:04pm
by Pu-239
Ok I looked up Gimp and CMYK. It's going to be avaliable for 1.4 when(if) it comes out.
CMYK is used to adjust colors to match the printer, since colors onscreen look different when printed, correct?
Posted: 2003-02-07 11:04pm
by phongn
Correct. CMYK colorspace is used on printed material, while onscreen RGB is used (well, on computer screens).
Also, the benefit of using 48bpp is when you do manipulations it is more precise and thus the accumulated rounding errors will not do so much to your image.