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  • Jeremy Garchow

    July 1, 2013 at 4:16 pm

    [Oliver Peters] “Maybe you should look at this:

    https://www.dalegrahncolor.com

    No color wheels there. “

    True, but that system is built around complimentary colors.

    It’s not minus red, it’s adding cyan. Color wheels are just a different way to display and manipulate that information.

    The Color Board, as you know, operates in a literal display of minus red (which in effect, adds cyan). You can also add cyan (minus red).

  • Oliver Peters

    July 1, 2013 at 4:23 pm

    [Jeremy Garchow] “It’s not minus red, it’s adding cyan. Color wheels are just a different way to display and manipulate that information.”

    Look again. The layout it plus in the RGB direction and minus in the CMY direction. The actual read-out shows minus RGB numerical values. That’s identical in concept to the Color Board. That’s all a color wheel is doing. It’s push-pull in one direction or the other, depending on the math. Operationally it’s the same thing, but the effect will vary depending on the exact color science used. That’s why manipulating the same type of controls (color wheels) might get you radically different results in different applications.

    – Oliver

    Oliver Peters Post Production Services, LLC
    Orlando, FL
    http://www.oliverpeters.com

  • Jeremy Garchow

    July 1, 2013 at 4:36 pm

    [Oliver Peters] “Look again. The layout it plus in the RGB direction and minus in the CMY direction. The actual read-out shows minus RGB numerical values. That’s identical in concept to the Color Board.”

    I know what you’re saying, but why, then, under Red is it not Cyan on the Color Board as it is in the Dale G app?

    And why can I add Cyan and minus Red?

    The Color Board is not displaying Minus Red as Cyan as the Dale Grahn application does.

    Pretend you know nothing of color theory, would you be able to surmise that adding cyan is minus red as you would from a color wheel, or the Dale G app?

    RGB values are a common language.

  • Oliver Peters

    July 1, 2013 at 5:38 pm

    [Jeremy Garchow] “I know what you’re saying, but why, then, under Red is it not Cyan on the Color Board as it is in the Dale G app?”

    Simply a different way of saying the same thing. In X you are adding or taking away RGB intensity. Obviously the ProApps developers thought this made more sense to novices. You are adding or subtracting a certain color. I guess they felt that after a decade of color wheels, the accepted theory didn’t make sense to new users.

    In Grahn’s app you are doing the same, but it is expressed as RGB (+ value) and CMY (- value) because you are shifting the result in the direction of more of one and less of the other. This is an outgrowth of printer lights, which BTW, can also be found in the dearly departed Color.

    [Jeremy Garchow] “And why can I add Cyan and minus Red?”

    Because that’s how complementary colors work.

    [Jeremy Garchow] “Pretend you know nothing of color theory, would you be able to surmise that adding cyan is minus red as you would from a color wheel, or the Dale G app?”

    I have no idea what point you are making. Part of the idea behind Grahn’s app is to help folks understand color theory. Remember this is an iPad app designed as a teaching tool.

    The fact that he uses slightly different terminology than X, doesn’t change the fact that both operate in more or less the same way.

    And FWIW, there are a lot of high-end colorists who never use color wheels. It’s my understanding the the folks at E-Film use a modified version of Lustre that’s strictly driven by keyboard commands. The original DaVinci panel (later dubbed DaVinci Classic) only used soft keys and rotary knobs.

    Also, if you look at the wheels in Moods, the control is totally different than any other approach to color wheels.

    – Oliver

    Oliver Peters Post Production Services, LLC
    Orlando, FL
    http://www.oliverpeters.com

  • Jeremy Garchow

    July 1, 2013 at 6:04 pm

    My point is that the Color Board is less of an expression of complimentary colors than the Dale G app.

    A Color Wheel shows better complimentary color relationship, as does the Dale G app, than the Color Board.

    I am struggling to find a third way of saying it. Maybe this,

    If the Color board was trying to teach complimentary colors, as is the Dale G app, Cyan would be under Red, just like the Dale G app. IF Apple did this, essentially flattening a color wheel and adding the flat complimentary color underneath it as negative values, you would have the Dale G app.

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