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  1. I have some info here on how CMY primaries work...

    I have some info here on how CMY primaries work and how CMYK relates in theory to CMY, but I'm not sure that's what you are asking about:
    http://www.huevaluechroma.com/052.php...
  2. The typical approach prior to the second half of...

    The typical approach prior to the second half of the nineteenth century was not painting over greyscale, nor direct painting, but involved variations on the idea of "painting in layers" over a first...
  3. Benedikt is right, but you might be able to...

    Benedikt is right, but you might be able to significantly restore the look of the work you've already done by a gamma adjustment on your laptop. In Photoshop it's under Adjustments > Exposure.
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    Your diagrams look good. Imagine that there...

    Your diagrams look good.

    Imagine that there are a series of parallel roads heading off to the horizon following the direction of each of the cast shadows. From your point of view a road through a...
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    The construction uses the anti-solar point to...

    The construction uses the anti-solar point to indirectly represent the location of the light source because the actual location isn't in the picture plane. On the horizon vertically above the...
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    The "light vanishing point" is the anti-solar...

    The "light vanishing point" is the anti-solar point - the point directly opposite the position of the sun.

    It's easiest to understand how it works if you think of the sun on the horizon at dawn....
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    You seem to have the basic idea:...

    You seem to have the basic idea:
    http://www.huevaluechroma.com/021.php

    One common approach is to use the unshaded colour of the paper for the centre light, and white chalk for the highlights....
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    In the book there is an example of a leg drawing...

    In the book there is an example of a leg drawing that starts with what is clearly a blind contour, which is what I have usually done, but the main thing is that you do the drawing blind, and don't...
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    Sounds just right to me - you're not bound by...

    Sounds just right to me - you're not bound by anatomy or perspective, but you do understand them.

    Perspective is actually a good analogy. Just as lines in an image that converge on a vanishing...
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    Nothing at all wrong with your question,...

    Nothing at all wrong with your question, gillianseed! The vertical line shows a set of colours in which Photoshop Hue and Saturation remain constant and only Brightness changes, so yes, it does give...
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    Sticky: Also check out the free pdfs in the Getty...

    Also check out the free pdfs in the Getty Publications Archive:

    http://www.getty.edu/publications/virtuallibrary/
  12. Sorry jestR, I don't know much about that school,...

    Sorry jestR, I don't know much about that school, but I believe there is also an annual training program at Animal Logic in Sydney that is very highly regarded, though not easy to get in to.

    If...
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    Littlebit, bear in mind that any decent art...

    Littlebit, bear in mind that any decent art school or centre that has life drawing classes will have a skeleton available (at least, I'd avoid any that don't!). So if you sign up for a term or two of...
  14. Art: This page has some additional examples of...

    This page has some additional examples of dramatic "glow" created using specific quantitative colour/value relationships (as opposed to contrast per se): ...
  15. Art: You're very welcome! If your're interested,...

    You're very welcome!


    If your're interested, these pages relate to my comments about complementaries:
    http://www.huevaluechroma.com/index.php (introduction)...
  16. Art: BlindLynx, those colour pairs - orange/blue,...

    BlindLynx, those colour pairs - orange/blue, red/green and violet/yellow - are the complementaries of simplistic "traditional" colour theory and can be very misleading, as you will see if you study...
  17. Art: These diagrams should help anyone who thinks the...

    These diagrams should help anyone who thinks the glow can be explained purely in terms of contrast. (Sorry, I can't at the moment remember their original source!). The two diagrams are made of...
  18. "Brightness"(B) in HSB is not value. It is...

    "Brightness"(B) in HSB is not value. It is brightness relative to the maximum possible for a given hue (H) and saturation (S). I have a diagram on my site showing the relationship of S and B to value...
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    What is colour?

    This is a response I produced for the 2014 Flame Challenge, sponsored by actor Alan Alda, to answer the question "What is color?" in a way suitable for school children. I don't know how it will go...
  20. This isn't current science. When the trichromatic...

    This isn't current science. When the trichromatic theory was first proposed it was assumed that there were three receptors with widely spaced sensitivities peaking in red, green and violet (Young) or...
  21. The physical aspect of subtractive mixing is...

    The physical aspect of subtractive mixing is fairly straightforward: the light reflected by an object is found by multiplying together, wavelength by wavelength, the spectral energy distribution of...
  22. Sticky: That's exactly what I'm saying - the intensity...

    That's exactly what I'm saying - the intensity (luminance) is the same because the smaller amount of energy is concentrated in a correspondingly smaller visual field.



    Sure, it's the nonlinear...
  23. Sticky: Sorry, I haven't really gone into the BB effect...

    Sorry, I haven't really gone into the BB effect in great detail myself because to be honest it seems a rather arcane issue in the context of practical painting. There's even some debate over whether...
  24. Sticky: Mister Janichan, The striped sphere in white...

    Mister Janichan,

    The striped sphere in white light looks really good, but your method only seems to be letting you paint setups where the main light and the shadow illumination are the same...
  25. Sticky: Fair enough, then. This is what it looks like: ...

    Fair enough, then. This is what it looks like:

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