PadawanGeek
Active Member
- Joined
- Apr 27, 2007
- Location
- Northern California
Oh, so there's no such thing as an RGB Scroller?"CMY" is a subtractive process and uses a single white source. A combination of Cyan, Magenta, and Yellow dichroic filters are moved in front of the light to subtract out colors in order to mix the color you want. (Seachanger adds a fourth "extreme Green" filter to extend the range of colors possible.)
That is correct in that there is no scroller that could be loaded with red, green, and blue gel strings and give you any output. Putting any kind of color media, be it dichroic or gel you are creating the apparent color by either reflecting back the unused light (dichroic) or turning the unused light into heat (gel). If you put a combination of any two "pure" primary colors in front of a light (using either dichroic or gel) you will actually get no output. In short, there is no such thing as subtractive RGB mixing, it is impossible.
I find it interesting that you say this on account of the fact that in the graphics world, most printed graphics are created using some variation on the CMYK (Cyan, Magenta, Yellow, Black) printing process. Many new printers now use 8 inks, two tones of each color. Printing from an RGB palette is quite difficult, yes in pigment color theory it works, but have you tried it recently? It is very hard to create shading when you start with saturate primary colors.Chaos is Born said:When it comes to both Graphics and Lighting i prefer RGB.
Just to add to what Wolf said... you could take three instruments with color scrollers, pack them in tight together and aim them carefully to hit the same space as close as possible and create a form of RGB type of mixing.
this is true, however working in photoshop i have always found it easier to work RGB mixing than CMY on the color pallet. Granted when i'm doing photography editing with saturation in RAW images, i'm using ROYGABPM mixing seperatly to themselves, probably the best work is done with RAW images cause each color is a layer to iteself and it ends up working quite like CMY mixing on a slide that you would have, however i was trained in RGB since photoshop 4thats what i know and use in photoshop.I find it interesting that you say this on account of the fact that in the graphics world, most printed graphics are created using some variation on the CMYK (Cyan, Magenta, Yellow, Black) printing process. Many new printers now use 8 inks, two tones of each color. Printing from an RGB palette is quite difficult, yes in pigment color theory it works, but have you tried it recently? It is very hard to create shading when you start with saturate primary colors.
But what if you were to additive mix with CMY? I've never seen strip lights or cyc lights to be CMY (although I have seen RGB, RGB+Amber or RGB+N/C). Why is it that most striplights do not use cyan and magenta to create blue? I'm assuming it has something to do with the light output or the strength of color used?"RGB" is an additive process and requires multiple light sources (typically Red, Green, and Blue) which are mixed together to make white. However, RGB isn't the only additive combination used. Selador's LED instruments use this technique but actually have 7 different colors mixing to make white.
"CMY" is a subtractive process and uses a single white source. A combination of Cyan, Magenta, and Yellow dichroic filters are moved in front of the light to subtract out colors in order to mix the color you want. (Seachanger adds a fourth "extreme Green" filter to extend the range of colors possible.)
This has to do with another, almost unwanted characteristic-
Dichroic. "Diachronic" refers to language. See kids, no one is immune or above reproach; see this thread: http://www.controlbooth.com/forums/question-day/8599-cb-tech-form-english-class.html. JD used the wrong word once and was never corrected, so now he is wrong every time. <lecture /off>...Diachronic filters used in subtractive mixing...
Ah, go tell Bill Gates! (I don't care if he retired!) I pre-type my posts into Word, and it auto-corrects it to Diachronic every time!Dichroic. "Diachronic" refers to language. See kids, no one is immune or above reproach; see this thread: http://www.controlbooth.com/forums/question-day/8599-cb-tech-form-english-class.html. JD used the wrong word once and was never corrected, so now he is wrong every time. <lecture /off>
Ah, go tell Bill Gates! (I don't care if he retired!) I pre-type my posts into Word, and it auto-corrects it to Diachronic every time!![]()
If you're a mac-ie, Safari does too. I think spell check is much more useful than auto-correct.You should add dichroic to the dictionary then. Or get Firefox. It does spell-check, but not auto-correct.
I thought Safari did it too, but I wasn't sure so I didn't write it. You can get Safari for Windows, too; I like Firefox because it's open source and the bookmarks feature works better than on Safari.If you're a mac-ie, Safari does too. I think spell check is much more useful than auto-correct.![]()