schlichting%v70nl.DECnet@NUSC.ARPA ("V70NL::SCHLICHTING") (12/02/87)
In answer to David Whitney's question on simulating a specific wavelength I
suggest he look in his library for the book, The Science of Color, last
published by the Optical Society in 1973.
It has a good chapter on quantitative data and methods for
colorimetry including a table of tristimulus values of the spectrum from
380 to 780 mu (5 mu steps). That same chapter has the formulas used to
generate the table. If you are doing color research you should use a
spectrophotometer to measure your output as color guns vary and may also
give you different values in different areas of the screen.
------lsr@Apple.COM (Larry Rosenstein) (02/01/90)
In article <59.apple.net@pro-dchamber> akim@pro-dchamber.UUCP (Arnold Kim) writes: > Don't get me wrong - I like the Mac - but think about what you'll need to view > those colors. actually it's a pallete of 16.7 million. BUT, you have a limited > # of pixels, so you can't have more than a few hundred thousand (that's all) I think you miss the point of having 24-bits per pixel color. The point is not that you want to display all the colors at once. The point is that you can make each pixel whatever color you want (out of 16.7 million). It isn't necessary to compromise by using dithering (or some worse kludge). Some users require this capability. Larry Rosenstein, Apple Computer, Inc. Object Specialist Internet: lsr@Apple.com UUCP: {nsc, sun}!apple!lsr AppleLink: Rosenstein1
philip@pro-generic.cts.com (Philip McDunnough) (02/05/90)
In-Reply-To: message from lsr@Apple.COM >I think you miss the point of having 24-bits per pixel color.The point >is not that you want to display all the colors at once.The point is that >you can make each pixel whatever color you want (out of 16.7 million). >Some users require this capability. As a user of a IIci(and a GS), the key qualifier here most be "some". Without the ability to move the pivels around(hence a graphics' accelerator) it is hard to imagine that "true colour" can be anything but a "niche product". There are surely more important priorities than 32 bit colour. Philip McDunnough University of Toronto [my opinions]