The Weird World in RGB
ฝัง
- เผยแพร่เมื่อ 27 ส.ค. 2019
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Have you ever wondered why the word looks so weird? Wait. Weird as in, like, all the time? Of course! We live in a weird world! But light, though! What about weird light? Ahhh, that's what this video is all about.
This is the strangest vid. description I've written in a while. Cool.
Alright, so now here's the part where some links go:
The all-important second channel discussion;
• TC2: More RGB Weirdness
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The TC Subreddit
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Technology Connections 2 (the channel where I sometimes talk about stuff and generally don’t prepare for anything):
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"What color is this?"
"...orange-"
"That's right: it's red!"
"-red!"
Hyreia same XD
Saame
the fuq xD
100th like
same
"Oh, sorry, this one is monochromatic, let me get that out of there"
That caught me completely off guard.
Almost choke on that one
Same, lol
I just rewatched the video and I remembered one of them was mono. I was trying so hard to figure out which one it was and I picked wrong. That was the weirdest feeling ever when I realized I was wrong
A regular M. Night Shyamalan.
It completely snapped me.
"Anyway, let's take a look at our old friend, Putt-Putt."
I felt like I suddenly went from watching Technology Connections to having a fever dream.
This is actually known since ancient times.
Genesis 1:3: And God said "Let there be light". And then God increased the levels of RGB to 255, 255, 255, and set transparency to 0.
God's not a programmer! God is a DJ!
Close enough. Our sun is white so that's why we see the colours we see
"Let there be light! And there was light. It was good. Damn good!" Just think, and ponder: Originally there was no light and no sound.
@@kitemanmusic sp?
kitemanmusic It is pretty fascinating to think about
The _length_ of _sigh_ I released when you said "RG-bees knees..."
That was the absolute worst. Of all time.
I feel like I need to make a special trophy for just how absolutely terrible it was. Like, legitimately, literally *absolutely*.
I honestly don't think you can get worse than that one. We'd need to recalibrate the core tenets of groan science if one was ever discovered.
OH GOOD LORD I TAKE IT BACK! That grayscale Rubicks cube! The foundation of groan science has been rocked to the core!
The small chuckles echoing around the world because of it.
It's better than that
"R G B's knees"
"Are the bee's knees"
Thats bravery,telling the jokes that need to be made.
colorblind people really must have a love/hate relationship with this video.
You don't even know. I didn't even know what he was talking about half the time yet I was able to really show my family what it feels like to not be able to tell colors apart.
v2_ I have no red cones so everything is broken
I have mild color blindness and i was thinking "so that's gow i see colors" at the end where he shows what it is lile for color blinds.
Can confirm.
I'm blue/yellow colorblind and I'm having trouble telling things apart.
Yep. This is an interesting one.
Favorite line of the day.
"Here's a different kind of color, a GameBoy Color."
Actually that "grey" looked pretty purple to me.
On an odd tangent, I watched this with my husband. He too saw it as grey but I insisted I saw a faint purpley-grey rather than a flat out grey. Even when I covered most the image to account for the bias of the brighter whites influencing me... I saw a dull purple shade.
Remember how he mentioned violet is at the very edge of our visual color spectrum? Females have been known to see into the violet spectrum further than their male counterparts. Females also have the ultra rare possibility of having a special kind of "color blindness" that allows them to see ultra violet light. My guess would be you were most likely born female and can see a glimpse into the edge of our visual spectrum where Alec can not.
@@clueless_cutie Nope I'm a dude lol
Edit: was
Yeah, I saw the purple too. Also, a dude. I think this is one of those things coming from white-balance. Kinda like that blue/gold dress that went viral a few years ago. My guess is he saw it as grey, but it looked clearly purple to me as well.
@@clueless_cutie " Females have been known to see into the violet spectrum further than their male counterparts. Females also have the ultra rare possibility of having a special kind of "color blindness" that allows them to see ultra violet light."
That is neat, but its not really relevant here since its an RGB video. There isn't any violet or ultraviolet in the image cause the shortest wavelength coming off the display is blue.
Not just pretty purple for me, supes purple. Probably variation in the peaks of our green and red cone spectrum graphs. Mine may be further apart than those who see grey.
"What color is it"
Me: Orange
"Well, you're probably thinking red."
Me: *sweats nervously*
haha. I'm in danger
me
This has already been posted 1 month before
@@cameronlau Except this one has a different context; he's worried that he's colorblind while the other was just correcting what he picked
swok Your pfp shows it very well
That monochromatic Rubik’s cube got me laughing so hard. Good one!
And it was a great prop for realising just how skewed our perception is without a good spectrum of light! It wouldn't have crossed my mind to think they'd look the same
It made me smile because I was sure I'd worked out which parts of it were orange.
@@AdvancePlays it looked more realistic than the colored one 😂
It's kinda trippy for me, when the white light got restored... for me it looks like the monochromatic one has zero color at all. Like Spider-Man Noir.
Satan likes
This video is actually helping me understand how colorblind people can "see" their missing colors with Enchroma glasses.
And today I learned that Enchroma glasses exist.
@@PsychadelicoDuck me too
I'm a red-green colorblind person, I want these glasses so damn much but they're too expensive lol
@@NetExplorers Apparently they just work like a colorblindness filter. They don't expand the color wheel with more colors. Instead, it just makes certain colors easier to distinguish. I, however, am only very slightly deuter, and might be misrepresenting.
@@NetExplorers spot the odd one out 🍎🍎🍎🍎🍎🍎🍎🍎🍏🍎🍎🍎🍎
5:32 note that rods don't just 'detect brightness', they are in essence a chromatic sensor just like the cones (centered around 500 nm which is turquoise), just not used by the brain as such. So the brain detects brightness through rods, and detects colors through cones. And because rods aren't overall brightness sensors (but rather what a blue/green cone would be), that causes you to lose red vision at night and other low light conditions. Hence why we associate a blue hue, low brightness image with night time.
"...that causes you to lose red vision at night and other low light conditions." Would this also be why I've seen astrophotographers and astronomers use red LEDs when they're stargazing?
@@ThomasFerguson22 the quoted phenomenon is named "Purkinje effect" (see Wikipedia article). As for why people use red lights at night (i've seen some urban explorers with red headlights): receptors that control pupilary light reflex are even more blue-shifted than rods: 480 nm versus 500 nm for rods. If you're interested, the name is "Intrinsically photosensitive retinal ganglion cells" (also on Wikipedia).
This is why it's recommended to wear blue instead of black to hide in the dark.
@@DemstarAus Wouldn't that stimulate the rods more than black would?
Unless you're hiding in a 100 percent dark room or the eldritch abyss, anything black would ironically stand out in low light conditions. Black is rarely found in most environments; grass is not black, trees are not black, houses, hallways and buildings are not black.
"what color is this?"
- ..orange
"well red of course!"
- whatt...
"If I add red it really turns grey"
Uh no I can see the purple just fine...
9:02 all the red objects are now black:
Me: The etch-a-sketch is still red.. How does that happen without any red light?
"Watch as this red writing disappears under red light."
*[Godot has left the server]*
@@Carewolf from my understanding it's your brain being able to distinguish the blue and green channels from the reflection of the etch a sketch and determining that color as red. This is just a guess, but it's my best one
Carewolf probably because you know what colour an etch-a-sketch is and your brain is using that to inform what you perceive.
I bet he smiled so hard when placing that monochromatic rubic's cube on the table.
That one made me chuckle. Don't you just hate it when you get your monochrome and color Rubik's cubes mixed up? Happens all the time.
LOL. Yeah. That was an inspired move.
I laughed out loud.
TravisTev rubix*
@@aspol12 Official spelling: www.rubiks.com/en-us/
youneedacomputer2005 Just don't even try to correct it if you're a non cuber
This puts the phrase "Don't always trust your eyes" to a whole another level.
The scientific explantion of it
255 likes what a coincidence
I'm colorblind and still really enjoyed this video. The strangest thing for me was when you said that Put-Put turned gray when he looked the same color as the original to me (which looked blue to my eyes, not purple). You are right that the colors you switched to in order to simulate colorblindness isn't exact as I could see what appeared (to my eyes anyway) to be a change in shade in several colors. Still, I did not see an actual color change when you switched from regular to colorblind. However, I agree that for a color-seeing person, your experiment better shows the experience of not being able to distinguish colors than looking at an image that just turns all reds a brownish color.
Im colourblind too. Simple red green and blue not too hard. Wen shades and hue starts to change like put put i just went with wat ever colour he said it was and try to see it.
Im not colorblind but when he said that put put turned grey I couldn't see it I was seeing purple and I didn't get it why he said that it was grey
@@wdym._. I am seeing it as purple too and I am not colorblind. I suspect this boils down to how the brain interprets the info received from the eyes. The interpretation varies slightly from one individual to another. Remember the black/blue vs gold/white dress controversy? I believe the same phenomenon happens here.
Brains affects also how do yoy see colors, it is not just a wave length. Brains try to "fix" non-white light to be "normal color", and it may fools you what color you are seeing. Some person have that "fixing" stonger than some other person (and it is dependant about tireness, mood and zillion other things also). There was few years ago a meme "what color (blue-black) this dress is?" Some people saw it as white-golden and it was because their brains thought "there must be blue light" and brains automaticly "fixes" it.
I’m not colorblind and when he said it looked grey, it still looked purple. It might be a flaw in the way he himself sees color.
“What colour is this?”
Oh it’s oran-
“It’s red, of course!”
O-oh...
xD me too
Same
same
same
Well guess I'm color blind
16:55 17:05 17:25 17:51 every time he says "...just grey" I see a clear purple
Probably it looked grey in person
@@zsigio6114 no, it didn't. otherwise he would have noticed while editing. people perceive colors differently. more specifically people perceive colors obscured by shade differently. it's the same thing as with The Dress of 2015.
Might have to do with the brightness of the room you are in. Try watching it in a dark room.
lul, if you were colorblind you would actually still see grey dummy so its probably your monitor
I was thinking the same but in my notebook indeed looks grey
I also find it really interesting how when you look at things in a monochromatic view (i.e., ONLY a red view), you say "This is red, this is a darker red", but my mind automatically assumes them as white, black, etc etc, as if the colour isn't there at all.
Very interesting video!
As a child, I was taught the good ol' red-yellow-blue colour wheel. As a digital artist, I've always had difficulty reconciling this with RGB channels in Photoshop, etc. This video has helped immensely in that regard; thank you for posting it!
It's complicated. Red yellow and blue are actually the primary colors of paint because paint doesn't generate light, it absorbs it. So paint is called "subtractive" while LEDs are "additive".
To put it another way, you paint with not-cyan, not-red, and not-magenta. When you combine them all you get black, or muddy brown. Note that modern printers use cyan, yellow and magenta to produce the subtractive effect. But these pigments are layered on reflective paper, not mixed together as in paint.
In other words, the rules vary depending on how you create the illusion of color.
@@richardryley3660 Exactly. That having been said, I always had trouble grokking the RGB colour system in the same way that I have done with pigmentation. I've more-or-less reconciled it by thinking of the two as separate systems - each for their respective environment. This video was helpful in marrying the two approaches on an intuitive level.
PuttPutt:
Every time you said it was grey, I saw purple.
Same for me !
make sure you didn't swap your orange juice for LSD again John. come on mannnn.
Same for me. ³
Same, but unlike him I wasn't bathed in the light. I was viewing it on a screen that was taking up a relatively small amount of my visual real estate compared to the daylight-lit white background.
same
For the red/green color blind experience, a better way of lighting it would be to use monochromatic blue and monochromatic amber. I had a classmate that was R/G color blind in one eye after an accident when they were a kid. They described it as being more of a yellow-orange for anything red, yellow and green. Depending on how something was pigmented, greens tended to look like more of a drab olive in that eye.
Someone I know who was colorblind at birth is actually an artist and mechanic. While he always makes sure to double check wiring with a multi-meter just to be sure, he generally does really well picking out the right ones based on intensity in comparison with other colors. The one art piece he gifted us was a 2-D carving of an x-mas tree that he had drilled to put lights through. Despite his limitation, he mixed up a green paint that looks almost exactly like the fir tree in our front yard.
what kind of accident makes someone colorblind but only in one eye?
@@DANKKrish I intentionally left that detail out.
@@dhawthorne1634 ah i see. i have a friend too who became colorblind from an accident but on both eyes. never really managed to find any info on how this can happen.
When I was a kid I used to grab a magnifying glass and look the box-TV screen because I could see the little "three colored squares" that way. It was kinda fascinating.
I remember the green tube (i guess?) went out in our tv (early 80s) so for 6 months we watched Magnum PI in nothing but bold, bleeding red.
"What colour is this?"
Me: Orange
"That's right, it's red!"
:/
Did you know orange was just called red until society decided to name it as a different colour? It's actually named after the fruit. So you weren't wrong
@@Googaliemoogalie And before a language develops a generic yellow, people would say something was banana coloured (if they lived somewhere bananas were known). Before getting oranges from tropical places (still a rather long time ago), people would often compare to ginger hair, itself called red hair still today. Like "it was red, like Jimmy's hair".
@@kaitlyn__L and before that, and in fact still in some languages, the word for blue and green was the same.
I thought the same!!!
@@jetison333 and and, even in places that have developed a green-word, sometimes green things are still called blue as a holdover. Like green traffic lights in Japan being "blue" (ao), despite there being a green-word now (midori). Looking that up to double check I was right, I learned the commonality is that it happens in compound words.
"Oh this one's actually monochromatic, let me get that outta here..."
I REALLY got a kick out this. If anyone somehow wasn't following your point, this would INSTANTLY drive it home. As someone who has studied the psychology of learning, I must applaud.
I don't get it
Yeah. Like everything seems just grayscale under monochromatic light. After some time when your eyes adapt to the monochromatic light, every single color just seems like shade of gray. You don't even see the color, because your white balance just shifts towards red (or whatever that monochrome color is). Being able to see only one color is very limiting. However that representation isn't quite realistic depiction of how colorblind people with achromatic vision see the world around them. You're filtering out just single wavelength, which first of all creates very limited color palette, and then your eyes take that as white balance point, so you get adjusted to a new light. In this situation, the other two colors gets filtered out, which means those colors (and colors that do not contain the lighting color) appear solid black. That's not how achromatic vision works and looks like. Achromatic vision is complete loss of color vision, which means your cones eighter don't work or are completely missing. Therefore you can only percept brightness, such you cannot see any color. Everything appears the same color, which is best represented as grayscale (everyone has slightly different vision). You cannot tell that such person is seeing in grayscale. In reality, he doesn't really know how colors look like, he doesn't know what gray actually is. He has no means to compare different colors, everything is the same color to him. There are no colors filtered out, that person just has no means to receive informations about colors. Best representation is Photoshop's "grayscale" filter which averages colors based on their relative brightness to other colors. This is effectively best approximation, yet still not perfect. In reality, we don't really know.
I _was_ following the point, but that actual, very clear demonstration still brought my understanding to a whole new level.
@@joeyknight8272 you should have watched the video its really good.
@@simonl7784 I will
the wall directly outside my old dorm room had a Grateful Dead "Deadhead" mural outlined in rainbow. When we held floor parties and put up lights that shifted through the rainbow, the mural literally looked like it was pulsating.
Yea I first discovered this camping when I bought one of those cheap RBP LED strips and used it to light the tent, when set to cycle through colours any brightly coloured objects drastically changed colour as seen in this video especially the "just a bit of red makes all the red pop" scene
"What color is this?"
"Orange, of course"
"You're probably thinking, 'it's red!'"
"😭"
3/4 into the video I just realized I'm watching with "low blue light" mode on...
awww shit me too
Wait same
oh wait i finished it and didn't realize that
oh well, time to watch it again
Fuck, same.
Thanks for telling. Gotta watch it again
Pour yourself a bowl of fruit loops and set an RGB strip to slowly color cycle.
God it's like a bootleg acid trip.
Just like the old Amiga tech demo days 😊
I am 100% doing that tomorrow
Brother
this guy rgbs
This was so enlightening (pardon the pun) I had a fleece coat that was brown in full spectrum light but indoors with fluorescent or LED lights it was a greenish color and I never truly understood why. Now I do! Thank you for this wonderful video. :-)
This has steadily become my favourite TH-cam channel. It's just so chilled out, and that outro music tickles the little part of my brain that thinks not all the aesthetics from the 70's were terrible. No idea why, but there you have it. Thanks for all the cool stuff you've made for us to relax to. In this day and age, anything that helps my mind find peace is something to be treasured.
“These lights really are G bees knees.”
I don’t know how he can make me want to congratulate him on a really clever line and punch him in the face at the same time.
I know right? I want to give him a round of applause but put his head between my hands while doing so.
these lights really r g b's knees
@@tredI9100 Thanks, now I get it.
I guess that's why they call it a punch line...
Could you please explain the joke for a not native speaker?
There's a teacher somewhere using this in his science class
as they should, alec truly knows his stuff.
*looks around nervously in a teacherly fashion*
and the the class riots at the rgb’s knees pun and the monochrome Rubix cube
I will! It’s a great explanation and also uses equipment that is unavailable in most schools! Great video!
I literally just recommended it to one of my teachers xD
I've always been pretty confused about how RGB works and the comparison to the human eye, and this was a perfect explanation of how it works.
8:51 Interesting thing that happened to me. Suddenly the etch a sketch in the corner looked more red to me then it did before. The other red objects still looked black or a dark grey, but that looked and continued to look slightly red even when the lighting continued to change. I'm not sure if it was just my brain latching onto it being red and making me see it as redder or what. Even going back in the video though it still looks black until it switched to the colour at 8:51.
Yeah, that's a thing that happens. They're experimenting with something like this to create "hyper colors" in movies by overloading your eyes on a certain color then removing it to make an afterimage in a different or even nonexistent color (apparently they have a developer's edition of Inside Out at Pixar on a special projector that does this)
When you got to the part with Putt-Putt and you were calling him gray, I'm just going, "the body looks purple to me..."
In real colors Putt-Putt is so much greater.
Yes, I suspect people may respond to this the same as white&gold vs blue&black dress.
Exactly I thought I was going crazy
I didn't see any gray either, he was just purple...
that was your brain, because you KNOW he is purple. somebody who never saw it under normal light would have seen it gray. and this makes discussing colours and researching colour vision very hard :)
I'm sure there are lots of things in this video that you already knew, but I hope that the things you see here help to provide you with a deeper understanding. In other words, I hope I was able to shine a new light on an ever-interesting topic!
Oh so many colors
isn’t the part of the rubiks cube still showing green when there is no more light due to luminescence (the color light energy gets absorbed and when no more light is present it radiates the absorbed energy back) , it is one of the reasons we can still see some shapes even in almost pure darkness when for instance a basement light turns off)
Maybe you could make a video on color gamuts, and the reason why a real four-color screen (not Sharp's gimmicky and dishonest Quattron) might really enable it to display a wider range of colors.
How about the people who have FOUR basic colors? en.wikipedia.org/wiki/Tetrachromacy#Humans
I watched and saw your correction to say the ink appeared a little blue but I'm going to comment and say you said it turned black while lit by blue just because I can. I feel left out when all the people who don't watch before commenting get to yell at you but I don't.
0:01 "Shows red leds in a video about RGB"
My dumbass:
"That's definitely orange"
This kind of might explain Mantis Shrimp. I always thought, “oh they just see colors that we can’t see”. They probably just can further distinguish subtle colors to an extreme amount. Which would nearly be like throwing it through a noise filter. Kind of leads me to believe that their vision would look like colored static.
16:57
TC: "Looks gray"
Me: "I have purple superpowers."
Haha I feel you
I thought so too. It looks really vibrantly purple.
me too
Nah you're just subconsciously accommodating for the purple light being shined on it
If you didn't know it was purple before and was fully aware the light was purple, you'd believe you're looking at grey
@@spartanwar1185 I don't think so - I think the divide is similar to the divide with "the dress"
4:53
okay its hard to argue when i was convinced i was looking at 2 colored rubik's cubes
good demonstration
Totally got me with the left Rubik's cube... And I stopped the video and was guessing the colors like a complete tool. xD
I’m glad I have distinct color receptors with overlap instead of homogenous receptors with filters over them. You helped me appreciate that.
I'm surprised you didn't run into any fluorescent pigments. When I played around with RGB lighting, I found some things would light up green under blue light, and many things would light up orange under either green or blue.
Where was this when everyone on the internet was losing their collective minds over what color that dress was?
it was blue and brown, its still blue and brown, i'll fight anybody who says its anything else
@@blew1t it was blue and black
@@riba2233 clearly black and gold, y'all are crazy 😂
Teal and magenta! At least after photoshop...
Obviously the dress was Laurel and Yanny.
UV light is also interesting.
Pro tip, do NOT illuminate your toilet with UV light.
or your bed, at least you should be expecting some stains in the bathroom :D
Hopefully if you clean it properly the whole thing will light up ;)
Or your computer chair.
Oh shit, oh shit, it's like a Jackson Pollock paint!
@14:22 The city of Split in my country (Croatia)! That was unexpected. :)
You should try the cone stress colorblind test. If you overestimate your eyes with just one color (red is my recommendation) for a long time, the red receptors in your eye will become fatigued. For a short while after doing this red will be much more faint and the whole world will seem green and blue. This can happen on accident in situations of being inside a red tent or laying in direct sunlight with your eyelids closed.
1:37 "yes, these lights really are gee bee's knees"
*closes video in disgust*
*stares at desktop for 15 seconds*
*reopens video*
Red
Green
Blue
Once the three nations worked in harmony
But everything changed when the black nation attacked.
@@paulwebb2078 Ever since then, the nations have been constantly warring over who gets the most saturation, resulting in the world being completely different colors!!!
@@sebaschan-uwu Only the RGB board, master of all colors, could stop them.*
BUT EVERYTHING CHANGED WHEN YELLOW ATTACKED.
Lol
this video basically told me everything I learned in 6 months of color theory courses in about 20 minutes
Super interesting and cleared up a lot of misconceptions I had about color. The colorblindness demo was really intuitive in particular.
The differences between a "real" white light and a "composite" white light comprised of monochromatic red/green/blue added together, was completely fascinating to me! It had never occurred to me that there would be a difference. Can't wait for the video on your other channel to learn more about it.
I'm still having a hard time wrapping my head around it, because I was taught that what we perceive as white is the combination of the colors of the spectrum. "Monochromatic white" sounds like a contradiction in terms to me.
get your self a floor lamp with 3 sockets and get your self a red party bulb a green one and a blue one focus them into a composite white light(preferably on a white surface) then stand in front of it... rainbow shadows
I bought a RGB light strip as a bias light for my TV. Didnt look nice at all and I got a RGBW strip instead.
@@joesterling4299 It's worth noting that light is a spectrum; monochromatic refers to a very narrow wavelength. Photons are only produced at certain wavelengths (which is how we determine the composition of stars), and different pigments can have different reflective/absorptive/or re-emission spectra. When presented with a narrow wavelength, a pigment can only reflect a narrow wavelength. Our vision is receptive to all wavelengths, and determines the wavelength based on the intensity of light received after it has been filtered by the cone. As TC mentioned, artificial white light is replicating a broad spectrum through an averaged stimulation of three narrow spectra. This means that the pigment interactions at any wavelength outside of these won't be realised.
Similarly, think about how making coloured lights differs from making coloured objects. An objects colour can be created by adding varying amounts of Cyan, Magenta, and Yellow (CMYK), which determines which wavelengths are absorbed.
@@Hevlikn In reality, it's very hard to make coloured objects with CMY only because pigments and dyes are rarely perfect and that's why figurative painters always add some brown pigment to their palette (and sometimes more vibrant colours to emphasis a hue or a gradient). Same in the printing industry : for some very colour-accurate results, inks with special colours (like orange and green) are added to the classic CMYK. Finally, there also are metallic, fluorescent or iridescent pigments that can't really be mimicked by CMY-only.
This was definitely interesting. Especially the shot with the suddenly-red etch-a-sketch. I now understand the importance of CRI in a way I never have before.
Alec, I think you should take a look at my video "How the hell does color correction work??" ... specifically, the Google Doc that is linked to in the description. (I'd link it here, but then my comment will get stuck in the spam filter.) Most of the information on that document was provided by my subscribers - and it's info that I hadn't been able to find anywhere else.
I also have another video coming soon about monitor color profiles. They are far more tricky to deal with than anyone realizes...
Hey taran
Woah, nice seeing you here :D
The Etch-A-Sketch always looked red to me, even in the blue-only light. Just me?
The etch-a-sketch is kinda sussy tho
I've been messing about with a chromatic filter in a video game to take more interesting screenshots, and had some very similar results which I found very intriguing. This is definitely the kind of interesting stuff that makes me like your channel more and more as I find more of your videos.
17:49 "It just looks grey"
am I the only one who sees vibrant purple? (I'm really sure I'm not colorblind)
You aren't!
“RGB’s knees”
Dear Lord I strive for this punnage
LGR already covered it
As someone who has zero color vision, I still enjoyed this one! I learned quite a bit about how light and combining it works, and a couple of the demos even still worked for me (notably the whiteboard and the big set of stuff with the red(?) etch a sketch)!
"colors dont exist!! WAKE UP SHEEPLE!!!!1" - colorblind man
Yes, the etch a sketch was red.
That makes me think, a high power RGB flashlight might help people like you to distinguish colors, at least a bit... The "artificial" colors could still be a problem, but I think it should make life easier
Zero color vision? That's rare. If it's "zero" does that mean that red green and blue appeared same "color" to you when shown side by side? Also how did the yellow pixel looked like on that odd RGBY thing
Really, zero color vision? As in, you can’t see any colour at all? Because achromatopsia is quite rare.
This is a fascinating look into color from an artists perspective. We play with color all the time, but it really helps to know how they mix, especially digitally. Really nice watch!
I got rather confused for a moment when you showed the Putt Putt with red-blue light and talked about how it looked grey. It was still a very clear purple to me. When you put it next to the magenta, it looks more grey, but prior to that I really didn't see much of a color change.
During my stint as a colorblind low voltage electrician, I used a red/blue/white head lamp to determine which color wires were.
Red light: red is bright, green is dark, brown is semi bright.
Blue light: red is darkest, green is brightest, and brown is semi.
Switch to white light to confirm.
Easy peezy.
"Magenta Mess" sounds like a band you would have snuck out of your parents house in high school to go see in the 90's-early 2000s
I've got Deuteroanomaly - colour deficient, but not completely without medium wavelength cones. This was a great explainer on colour perception!
As someone who took lighting for television and film your foray into this subject is quite "brilliant". I thought this was an excellent examination of both how the eye and light work together. Great Stuff.
So you’re saying that... purple and magenta are pigments of our imagination?
numspacsym Heheheh, when I was a little kid, I thought that “pigment of the imagination” was the actual phrase! It made sense to me, in that I knew pigments were used to make colors, and thus images. :p
*_AAAAAAAAARRRGGHHHHHHHHHHHHhhhhh.................._*
@@tookitogo imagination comes from image
Yes of c--
wait
WHY YOU LITTLE #$@!
xD
get. out.
As a light designer to always found this interesting. It gets even weirder when you throw in the UV with colors as well.
Dang it! I have a playlist called "first videos I watched by different channels", and I just realized that I've had the wrong video in that playlist due to officially checking out your channel after making that playlist. I thought that the toaster video was the first video by you that I watched, but it's actually this one!
You can very roughly simulate red-green or blue-yellow colourblindness in Photoshop by converting to L*a*b* and then knocking out the a* or b* colour difference channel. It’s helpful in designing UI elements that are usable to colourblind people but still have a pleasing spread of colours for normal vision.
"it looks gray" idk looks pretty purple to me,,
Same! Some people can see more wavelengths of color than others, so it's possible that's what's going on there.
Yeah I was confused too
@@bridgetthewench you do realize, that we are all watching the same tri-chromatic TH-cam video? It's not "some people see more wavelengths", it's "different peoples brains interpret ambiguous visual information differently". It's the black-blue/gold-white dress all over again.
Yeah. Everything in the picture is varying shades of purple, so it behaves like a grayscale image, but it's still purple.
@@bridgetthewench no it isn't that. Its probably the camera, compression, and the scared combined end up messing the colors (oversimplyfied)
This was really just a 22 minute video telling people to go outside.
So had humans evolved with 4 different color-sensitive cones instead of three, would we have designed LED screens to use four colors rather than three?
Yes. Imagine we also had a yellow cone. This would allow our brain to differentiate pure yellow color from a mix of red and green. Since we would see yellow different than the mix of red and green, we would need a yellow led to be able to reproduce this. This is assuming our brain would actually make this differentiation.
u do such a good Fn job on these videos man... i cant imagine the amount of time n thought n work that goes into these, thanks man its Very much appreciated!
Adding RGB to your video title instantly increases framerate and clicks by 20%
RGB GAMER LIGHTING 120HZ 2019!!!
Not only does RGB increase your computer's performance and your gaming performance, but also your _video_ performance!
RGB simply means he's a Really Good Boy.
denelson83 Does he get his tendies?
That's the most useful dead pixel screen diagnostic program I know of...
Cool video, it's normally hard to explain how our eyes work, and I feel this will be valuable for anyone starting to learn about colorimetry, digital photography or color theory.
I just want to point out that in the comparison of 19:00, the white balances seem to be different on both scenes (I'm assuming that the white parts of the car should look alike with both light sources). It'd be nice to see what the car would look like if the white point was the same on both images, to have a fair comparison and example of the limitations of the RGB lights (Probably, the point you were trying to make would still be valid, just with a more solid comparison)
This is something I noticed and got curious about as a kid. Walking home, there were lots of sodium streetlamps, and I would ask my parents why everything looked "black and white" under them.
It wasn't until I got a bit older that I realised it wasn't black and white, but monochrome.
*places plush Putt-Putt on the table*
You had my curiosity, now you have my attention.
thekraken8him PBG Has entered the chat
And you have my axe!
...
Wait, no. That doesn't make sense.
I want to know where that Putt-Putt comes from. I want one of these for my five-year old- she's getting into classic PC games!
@@veronicafromminneapolis597 The Pyjama sam games I found especially creative and clever, and the music in all the Humongous games is really good. (also looks like that plush is actually pretty rare... you'll probably have to keep checking ebay and other sites until it comes up)
When I worked in a theatre, the LED lights that we used had separate phosphor-coated white LEDs along with the RGB diodes. The difference between RGB and RGBW is very noticeable, especially in a theatre setting where they are the only lights in use in the room.
The alternative to that being RGBAW lights as it's quite hard to reproduce amber without filters.
@@Iamdebug And you use amber a lot in theatre, because the regular phosphor-coated LEDs produce a very cold white which is horrible for displaying skin tones. If you ever had a follow spot on an open filter in your face, you know what terrible colour that has.
I tried using an RGB light strip as a bias light for my tv. The RGBW option was a lot better.
@@Stoney3K Indeed. Usually the common and standard RGBWW+CW (Warm white + cold white) LED arrays use 2200K or 2700K warm white LEDs. They can be mixed with red+green to get an amber look with a good color spectrum, and they can also be mixed with cold white to get a more natural white. All my LED strips in the house is RGBWW+CW due to the fact that they can create regular daylight, warm incandescent light and color ambience. Works great.
RGBW has also become quite common in residential lighting.
Well dang I was wondering about this just the other day when messing around with color.
Thanks for helping me understand a bit better myself.
I'm red-green colorblind and can only distinguish the "hidden" numeral on one or two of the standard color-blindness test plates. This I first learned when attempting to join the US Coast Guard in 1965; they told me not to bother with the Navy, either. I can distinguish red and green in large areas of color, but small ones, such as LED lights at any distance, look absolutely the same -- not white, but some "color" that could be either red or green! A funny feeling. Thanks for a good and entertaining demo of color vision!
i struggled seeing the purple car in purple light as gray
I see it as both gray and purple
Same. It just didn't really appear grey to me.
It's like blue dress gold dress all over again.
@@walkieer exactly
He explained it a lil later. it’s purple because the white in the eyes are reflecting purple as well, and grey is just a darker version of white so in this case it’s just going to be a darker purple.. idk if that makes sense but yeah lmaoo
4:53 WHY, YOU LITTLE....
10:26 yes yes yes that's true, I noticed it for years of my life but never dig deeper to it and now you explained it so well to me
Jadrolinija' s Tin Ujević ship. It really reminds me of a place where I was born, which was near the place where that footage was taken. Since I'm actually working with a lot of displays, yes, that footage got to me the most
there are some misconceptions in here about how RGB can reproduce all colours. it's actually not true that RGB can reproduce every colour the eye can see. this is what those weird "gamut" charts are meant to represent. essentially, if you can only control the ratio between three colours, then you can only produce colours within a triangular region on the gamut chart, and other colours outside are too saturated to be reproduced. if you had four colours, you can produce colours within a four-sided region on the gamut chart. I believe this was the intention of the quattron display.
I don't fully understand why this happens tbh, my weak understanding is you cannot excite a single kind of cone cell without also exciting the other one. for example, if I choose a monospectral red LED and a monospectral green LED, the red will still activate the green cones a little bit, and the green will activate the red cones a little bit. so there is crosstalk between the channels that cannot be controlled
colour theory is really weird and quite the rabbit hole.
@Zavier Alfretzie I've seen that too, though to me it didn't seem so novel, merely like looking at a very dim, deep red LED. The interesting thing is that since our eyes' reactions to wavelengths follow a curve, it doesn't just suddenly become zero outside the visible spectrum but in fact will often show a reaction (albeit an extremely weak one) slightly into the near IR or UV regions.
Smh I just got 16 minutes into my video before realizing my screens "night mode" was on
Thanks you prevented me from doing the same haha
This is an excellent explanation of color. It's the first one that actually called out so explicitly how the rods and cones worked
You've been a life saver for me..I have been beating my head to understand if real world will appear different if illuminated with original yellow and RGB version of yellow, I don't know how exactly to express my question in Google. But I tried and didn't find exact explanation I wanted and I opened this video without any expectations and finally got my answer.. Wow
Linus Media Group needs this as required viewing. They try to RGB everything.
Richard Reavis haha, I was thinking something very similar.
You know what else is required? PRIVATE INTERNET ACCESS! Click the link in the description below to learn more.
someone ignored all the stealth builds
@@theodiscusgaming3909 Hahahahahahaha
Probably part of the required viewing might be a lesson on how not to auction something they don't own
To simulate red/greem colorblindness, I'd recommend trying a combination of your Amber traffic light (monochromatic* between red/green) and blue LED light.
I thought that toon, but then red may still be very dark. But at least it can look like a 'white' white balance.
@@pizzablender, as a red-green colorblind person, red IS quite dark. It always annoys me that people insist on using red to mark important things, because it just doesn't stand out much to me.
GREEM
Yeah try playing any traditional shooter with a minimap, in cod I can't tell where fired enemy bullets are on the map, in battlefront the minimap is useless for enemy tracking. Honestly it's made me a better player in a way, ps I'm green colorblind
I also almost went through a stop sign once and the only thing that stood out was the white reflective border
I worked support for Sharp when the Quatrons came out. I got a good chuckle out of your comment about that.
Literally taking notes like I'm in a lecture bc I'm a music photographer/videographer, and as soon as he made the red ink disappear I realized this video is a guide for practical effects in lighting
Just a friendly reminder: turn off f.lux for this video.
huh
FRIENDLY JAPANESE BUSINESSMAN blue light filters
@@jer4rud0 yeah, but i still don't get it, why should he turn off blue? Don't we need RGBY to see?
Who even uses that anymore in 2019. Doesn't every OS have that built in nowadays?
@@BrookNeese Windows 7 FTW!
btw Win7 still has over 20% in the latest steam survey.
"What color is this can of spray paint?"
[Confidently guesses] Yellow!
(Some time later)
"That can of paint was yellow, by the way."
My guessing powers prevail once more!
Same exact thing happened to me lol
I thought it was red.
lol
same xD
I also guessed yellow
We have one of those Sharp TVs with the extra yellow. I know it's not supposed to make a difference but in some circumstances, it seems to.
As a computer graphic artist, I was aware of the seeming superfluous yellow when bought it, but it was on sale, so...
I was surprised to see a real difference in our new TV. It may have actually been for some different reason unknown to me, but the picture has a depth I've never seen on any other unit. We are not talking 4K here, either. We bought this TV 8 years ago before 4K was a thing.
A fun use of this phenomenon is The Action Lab using monochromatic light to make a fire appear black. Very neat!
I see how this happened....
"What shall I write on the white board?" ... "Hmmm... I don't know... something clever..." ... "Aha!"
4:54: the unexplained, unaddressed monochrome I really fascinating and really evil. I love it.
So the part around 17:40 about our minds own white balance made me think of something I noticed back in high school. I was bored in study hall so I just took a yellow highlighter and covered a piece of paper with it. As I got towards the end the last little bit of the paper looked more like a bright purple then white. I guess that’s a similar concept then, super neat!
It’s also interesting to think about because we have this fairly clear divide between “warm colors” and “cool colors,” which can probably be traced back to our cone cells. All kinds of nuances of color nomenclature likely have explanations or patterns to be found in the stimulation wavelength data.
I have a dodgy VGA cable connection on my monitor, so I've developed a reflexive stress reaction when an image on my monitor shifts all the way into magenta. Real cool video though
Flashbacks to playing PS2 with a bad component cable connection. Suddenly the track in GT4 would lose the blue color channel and I'd have to complete the race in green and magenta before I could wiggle the cable behind the TV.
Just, replace it? VGA or d sub cables are dirt cheap
Don't replace... remove. VGA should die :)
I was working on a monitor once with a bad cable, and someone walked by and asked why the color was so screwed up. It didn't look super off to me, then I jiggled the cable and the red started working. It was a noticeable, but not huge difference to me... but to the normally sighted person it was a huge change!
Not the cable, the port.