Great video, I liked the idea of using those colored shadows. My daughter studies graphic design and has also painting assignments, and we were talking about color mixing the other day. What I have not been able to explain (not even to myself), why blue and yellow provides green in substractive mixing. I mean it's not cyan and yellow, but normal blue and yellow.... This I cannot grasp. Why blue + yellow = green? 😄 Here's the problem: Yellow takes out the blue. Blue takes out yellow. So, if you apply both, you should get black (because nothing is left), or at least something dark, but not a nice, lively green... 😅 If I assume the filtering is not perfect, than yellow takes out most of the blue, leaving some of it to pass, and likewise blue allows a little yellow too. So than, you will have some blue + some yellow passing through, which are complementer colors, and provide white if combined. This means the black we should get will be not real black but (more or less dark) grey because some white is added to it. But that's still not green...! 😲😁
Very interesting. I searched for information on additive/subtractive color systems after watching a video on inkjet printers and the cymk model they use. I would be interested in learning more about how this color process or physics work in terms of wavelength frequency and how that works in the human retina.
Hello I bought a RGB Color Projector ... But I cannot find a CMY Projector. Anyone willing to help me out and send me a link where I might buy one Thank you
But I would also like to know how colour printers use CMYK to produce primary colours and also about colour photography (especially about the legendary Kodachrome process).
My second attempt to explain yellow + blue = green: Suppose the "crossover" for the filtering is a slope, not a steep cut between primary rgb colors. Than yellow leaves say 100% of red light, 90% of orange 80% yellow, 70% of yellow-green, 60% of green, 50% of cyan, 20% of blue. Similarly (but a bit narrower, and from blue to red) blue leaves 95% of blue, 85% of cyan, 70% of green, 55% of yellow-green, 40% yellow, 25% orange, 5% red. Than maybe the multiplication of the opposite slopes will result in a maximum in green... Let's see: red: 100% x 5% = 5% orange: 90% x 25% = 22.5% yellow: 80% x 40% = 32% yellow-green: 70% x 55% = 38.5% green: 60% x 70% = 42% cyan: 50% x 85% = 42.5% blue: 20% x 95% = 19% Well, the math works, but this seems to be a pretty flat spectrum, I don't think this would provide a vivid green, which we can see when mixing blue and yellow paint... What can be then the real explanation?
You need to keep in mind that blue paint is not a pure subtractive color, cyan is. Also it would be easier to think of light in just the 3 channels RGB. Like you said yellow is easy because it is the opposite of blue, so yellow paint subtracts the B. So that means that yellow paint is R and G light. Then you introduce blue paint which if not pure cyan then that means it is a combination of cyan and maybe some magenta and some yellow. I don’t know what shade of blue you are referencing. But you can see though that the cyan in the blue will then subtract the R, what you are left with is G light.
@@TheVisualCenter Thanks for the reply. I don't really understand "pure substractive color". If you mean it is not one of the primary substractive colors, okay, that I understand. But when you say, maybe it contains some this and some that, than I cannot follow.... 😄😄 In my understanding substractive colors work the way, they absorb a part of the light, and reflect only what we see. So blue paint should also be simple, it has to absorb yellow, in order to have blue at the end. (In RGB it would mean it absorbs red and green. And here the problem already shows itself, where can the green come from, if it was already absorbed...?) And the thing is, it is not just a specific shade of blue, I tried it with pencils, markers, watercolor, whatever 😄, any ordinary blue with yellow provides green.... Anyway, maybe just one more item to the list of things I'll never know in this life. 🤓
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What a brilliant explanation of colour models, clear, concise and easy to understand for old farts like me. Thank you so much for this content!
Glad it helped!
This is the best video on color models I've ever watched. Thank you very much.
Thank you very much, I’m glad you liked it.
Brilliant, thank you
Great video, I liked the idea of using those colored shadows.
My daughter studies graphic design and has also painting assignments, and we were talking about color mixing the other day. What I have not been able to explain (not even to myself), why blue and yellow provides green in substractive mixing. I mean it's not cyan and yellow, but normal blue and yellow....
This I cannot grasp. Why blue + yellow = green? 😄
Here's the problem:
Yellow takes out the blue.
Blue takes out yellow.
So, if you apply both, you should get black (because nothing is left), or at least something dark, but not a nice, lively green... 😅
If I assume the filtering is not perfect, than yellow takes out most of the blue, leaving some of it to pass, and likewise blue allows a little yellow too.
So than, you will have some blue + some yellow passing through, which are complementer colors, and provide white if combined.
This means the black we should get will be not real black but (more or less dark) grey because some white is added to it. But that's still not green...! 😲😁
Just brilliant
best explanation ever!!!
Thanks! Glad you liked it.
Very interesting. I searched for information on additive/subtractive color systems after watching a video on inkjet printers and the cymk model they use.
I would be interested in learning more about how this color process or physics work in terms of wavelength frequency and how that works in the human retina.
That would make an interesting video. We’ll see what we can do.
Well explained 🙂
Best video to understand the color model easily , thanks vs center
Thanks, we’re glad it was helpful!
This is a great demonstration, thankyou.
Glad you enjoyed it.
Hello
I bought a RGB Color Projector ... But I cannot find a CMY Projector. Anyone willing to help me out and send me a link where I might buy one Thank you
I don’t think they make CMY projectors, as they use the RGB method to produce color.
The yellow shadiw is coming from the blue light and the cyan shadow is coming from the red bulb.
But I would also like to know how colour printers use CMYK to produce primary colours and also about colour photography (especially about the legendary Kodachrome process).
👍👍👍
I've seen this being touted as fact but RYB are still the primary colors of pigment with regards to painting.
Correct! Thanks for the comment.
My second attempt to explain yellow + blue = green:
Suppose the "crossover" for the filtering is a slope, not a steep cut between primary rgb colors.
Than yellow leaves say 100% of red light, 90% of orange 80% yellow, 70% of yellow-green, 60% of green, 50% of cyan, 20% of blue.
Similarly (but a bit narrower, and from blue to red) blue leaves 95% of blue, 85% of cyan, 70% of green, 55% of yellow-green, 40% yellow, 25% orange, 5% red.
Than maybe the multiplication of the opposite slopes will result in a maximum in green...
Let's see:
red: 100% x 5% = 5%
orange: 90% x 25% = 22.5%
yellow: 80% x 40% = 32%
yellow-green: 70% x 55% = 38.5%
green: 60% x 70% = 42%
cyan: 50% x 85% = 42.5%
blue: 20% x 95% = 19%
Well, the math works, but this seems to be a pretty flat spectrum, I don't think this would provide a vivid green, which we can see when mixing blue and yellow paint...
What can be then the real explanation?
You need to keep in mind that blue paint is not a pure subtractive color, cyan is. Also it would be easier to think of light in just the 3 channels RGB. Like you said yellow is easy because it is the opposite of blue, so yellow paint subtracts the B. So that means that yellow paint is R and G light. Then you introduce blue paint which if not pure cyan then that means it is a combination of cyan and maybe some magenta and some yellow. I don’t know what shade of blue you are referencing. But you can see though that the cyan in the blue will then subtract the R, what you are left with is G light.
@@TheVisualCenter Thanks for the reply.
I don't really understand "pure substractive color". If you mean it is not one of the primary substractive colors, okay, that I understand. But when you say, maybe it contains some this and some that, than I cannot follow.... 😄😄
In my understanding substractive colors work the way, they absorb a part of the light, and reflect only what we see. So blue paint should also be simple, it has to absorb yellow, in order to have blue at the end. (In RGB it would mean it absorbs red and green. And here the problem already shows itself, where can the green come from, if it was already absorbed...?)
And the thing is, it is not just a specific shade of blue, I tried it with pencils, markers, watercolor, whatever 😄, any ordinary blue with yellow provides green....
Anyway, maybe just one more item to the list of things I'll never know in this life. 🤓
Tremedous
Thanks
I was lied to as a kid.
We all were…
Do you have trust issues now?