holtt@jacobs.cs.orst.edu (Tim Holt) (07/18/90)
Dear Color Netters: I am in need of some help dealing with mapping colors on my Mac screen to good looking colors on a color printer, specifically a Tektronix 4693DX color printer. The problem is that the nice "rainbow" pallet that I can see beautifully on my Mac II screen is less than a rainbow when it comes out of the TEK printer. Particularly, in the color transition from blue to green/yellow, there is a nice turquoise on my screen, but on the color print, the blue stays rather blue and then makes a rather sudden jump to green/yellow. I know from reading/experience that what I have on my Mac screen isn't going to look the same on the printer, and if I had a pallet that gave me a perfect printed picture, it would look bad on the screen. QUESTION 1: Does anyone have a rainbow CLUT/pallet out there that looks bad to so-so on the screen (i don't care what that looks like), but when printed on a TEK 4693DX comes out looking like a rainbow? QUESTION 2: While on the subject of making color pallets, does anyone have any suggestions on a good CLUT/pallet that (probably) looks like garbage on an RGB (mac) screen but looks like a rainbow on an NTSC (TV) screen? I haven't seen it, but some co-workers described to me having a graphics card on a Mac that output NTSC. They had the mac hooked up with two screens, one NTSC, the other Mac RGB. THey had a nice color image in a window, and when they drug the window to be half in the NTSC display and half in the regular mac display, the NTSC looked like crap and the RGB looked fine. Does anyone have a nice NTSC pallet, or suggestions on how one might generate a good one? I actually generate my pallets on my Sun workstation, so I do have a great amount of freedom to create/manipulate pallets. My current rainbow pallet maker creates a rainbow in HSL color space and maps it to RGB, which I output as a Sun raster pallet. Give me a buz via e-mail if you have any ideas, software, suggestions, or even bad dreams about this subject. If the responce warrents, I'll post a summary on the net. Tim Holt Oregon State University Oceanography Seismology holtt@nyssa.cs.orst.edu