Originally Posted by Vashti
Hey reio-ta. I tried to read that thread, but it was WAAAY over my head. Can you tell us what you mean by primaries and secondaries? Any other info that would be useful to us that you can translate into lay terms?
Thanks for your work here.
What else do you need to know?
As for what primaries and secondaries mean:
Red, Green, Blue are primaries
Cyan, Magenta, and Yellow are secondaries.
It'd be just like in real life. Say you made a transparency with red, green and blue and had all shades of each color. You then overlapped them. If your error isn't a simple one, where all three are equally off, like if you didn't overlap your colors properly, but the shades are correct. If you had an error with your red toner being too low, then by fixing red, you'd need to fix blue and green by a different amount. That's doing it in "3-D". The Radiance allows you to offset the secondaries and primaries at the same time, using a complex color warping algorithm, which I was told by Lumagen themselves how the Radiance CMS works. The HD* series uses the old, non-warping, method before adding a 3-D method. The new method mimics adding unequal amounts of red, green and blue correction, that's what you want. The old method only works if you shift the color equally in red, green and blue, which is pretty much useless but better than nothing in most cases, and most of the time is a preference. Sometimes the HD* method can give an equally wrong result, but it's more pleasing to you. Say you do like Tom did, only his green was off. Look at the chart. The direction he pushed green made yellows wrong, but by a lesser degree than green was off. Apparently his error was green needed to go more towards the red direction. You could argue that he just shifted the error, and if you like your reds and yellows untouched, his "fixing" the error on his Sony CRT wouldn't be a fix for you.