[fredflcikstone]

Here is the latest, take this into consideration. This applies to everything, every medium, but the color theory class I teach is in oil, so to learn opque consistent color. You can apply this digitally, watercolor, pastel, just figure out how the medium factors in when doing the color mixing for the color wheel.


Good Luck.


Ron[/img]

[inshield]

Im In debt with you for posting this knowledege and share it to us.
Its very useful and informative

[Pringle]

That goes for me aswell, thank you very much
And btw, your sketchbook is really fantastic.

[The Niles Edge]

yeah thanks a lot, i have really been trying to figure out this whole color thing lately and this should help a lot. unfortunately i must have missed part one
_________________
...be sure man that every
line drawn reflects a life that you loved
not an existence that you hated.
-Incubus

[Gort]

Ron-again-you are the man! A thousand thanks to you, although that is not enough for your continuing contributions to this (and others) forum. Good on you and major kudos abound!

Most Sincerely,
Tom
_________________
- Tom Carter

"You can't stop the waves but you can learn to surf" - Jack Kornfield

[Max]

Thank you so much Ron!!!

[see]

thx yes but...

for eg. such a scene:

Helicopter flying over desert. Shooting a missle. Its a "sunny" day but heavy smoke darkened the sky.

I mean thats my problem. How to start, when not having images to crop colors. Just out of head.

[ceenda]

Cheers again Ron!

Are you planning to compile these into a publication at some point (or are these collected anywhere online?). I'm having trouble keeping up when these appear on the forums.

[scumworks]

a big wet kiss comming your way

[bjotto]

Thank you very much, this is the most intresting tutorial I've read by you so far, very, very intresting

[watmough]

good solid information,clear and to the point,really great,thanks alot

[fredflcikstone]

I'll get some more up tomorrow o support this info again...thanks for the enthusiasm and support.


Ron

[Cpt.Obvious]

Great thing man, thanks I really enjoy your tuts, always great stuff to learn
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[jfb]

Thanks a lot!!! Great post!

[StylesDavis]

thank you, ron!

but i'm not sure about some points, let me try to explain:

you say color = value, which means for example, that a bright, saturated yellow has naturally a higher value than a blue with the same level of saturation and brightness... but when i made a test in photoshop with a pure yellow (255 255 0) and a pure blue (0 0 255) and desatured them, i got the same values of grey! either i didn't understand something right or photoshop has its very own technical approach to handle the relation between colors...
and when i looked at your colorwheel more carefully i realized that the "pure" colors of the inner ring aren't that pure in photoshop, and that the purpose for the down-shifting values from yellow to purple is, that you constantly darkened the pure colors. so, color really is value? or is it "just" a psychological and technically-unprovable effect, that a pure blue seems to be darker than a pure yellow?

perhaps a stupid question caused by my photoshop-brain. but colortheory has always made my brain muddy.
_________________
known as "ChrisNix" elsewhere.

[fredflcikstone]

Style- hey there. Ok, In the computer, you have what is known as additive blending. Its a bad thing when trying to figure out color because it is so different when lit.

The concept applies when making art, not comparing color. It is a simple thing of value, since we are poor in the concept of values, that is, we only have 9 we can work with, and zillions of colors, we have to manage what we use. Simplifying color down into values is the way to do this. ALso, when measured correctly, by wave length, each wave length of light, i.e. color/value, each color falls off in succession due to the wave length, this creates value, via science, not color by tubes of paint.

The idea is about managing your art. Brightness will distort color pretty quickly, be careful about that. I used to do the same thing but was I was loooking at color incorrectly. I was trying to get to technical.

If you have any other questions, if that did nothing to help, post any other questions you might have and I will try and visually answer them next time...

Thanks


ROn

[jfrancis]

Two things...

1) Color vs value in painting

http://www.digitalartform.com/values.htm

and 2) R G B to Luminance

http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=rgb+to+luminance&btnG=Google+Search

Type rgb to luminance into Google and you'll get the same thing over and over and over again: Luminance value = 0.3 R + 0.59 G + 0.11 B

Those weighted averages are based on color sensitivity and the human eye and are in use all over the world.

I duplicated the color experiment described by another posting above, and desaturated pure yellow and pure blue in Photoshop. He was right -- they make identical grays. This mainly proves that Photoshop programmers either don't know or don't care how to desaturate an RGB image. My money's on the latter; they always think they know best.

If photoshop programmers ran the world, the Swedish flag would look like a featureless gray rectangle on black and white TV's.

[drunken_muse]

Any pure colour makes a perfect 50/50 b/w gray in ps when desaturated. (it applies to all, not just blue & yellow)

Question:
If you take a colour image and desaturate it, and
the same image with a perfect 50/50 gray "colour"
layer, shouldn't that result in the same image?
http://idun.free.fr/ps_test.jpg

[jfrancis]

[bjotto]

I think you're forgeting one thing, if you compare the colourwheel from this tut with thoose colours srunke muse showed you'll see that the drunk's purple is much brighter