Color Scientist Explains the Problem with RGB Lights

[@mmeerdam]

It's so rare to see this level of involved, honest sharing of knowledge on youtube. It's even more rare to get it from people with commercial interest in the products used. To put your own products next to the most high end and not break a sweat showing all the results to educate users on the fundamentals of color science is such an involved thing to do. thank you! You are an inspiration to which a lot of company's should aspire to.

[@SuperCookieGaming_]

Mark Meerdam if you like this in-depth look at a topic i recommend Technology connections. he also did a video on this but also in-depth videos on other technology topics like cd’s laserdiscs.

[@altaccout]

You Just watch the wrong videos. This seems about average from what I've seen.

[@SuperCookieGaming_]

altaccout me?

[@haywoodjablome440]

I dunno what it is about it, but this video seems a bit slanted to me.

[@kurtlindner]

Lee and Rosco should throw money at you for this. This was one of your best videos this year. I'll be using it a reference for many people.

[@danielschiffer]

This is one of the most enlightening (see what I did there) videos I have watched in a really long time. This was definitely worth the full 18 minutes and 44 seconds. Amazing content it's hard to believe I got all this info for free 🙏

[@GraemeStanfordWilson]

THE KING. Love your work, man!

[@Falkano]

Tiny detail, but you could have done the wipes top to bottom instead of left to right. In that case both versions of any colored cloth would have been on screen simultaneously. Otherwise super interesting and well done video :)

[@samueltabotta]

This is great stuff. Please do more of this super technical and expert stuff. Love the channel now

[@indymogul]

thanks for tuning in! Please pass it forward. Tim is the real deal and there's a lot of misinformation out there even on the very high-end of filmmaking.

[@bomche115]

Great knowledge. I love you guys .

[@ThomasAndersonbsf]

@@indymogul Agree with @Samuel Tabotta on how great the technical stuff is, as I mentioned above this opened my eyes to the fact that something I developed for lab use might have a use for film, and still camera photography :) If you want to talk about more in depth about it over DM on skype, Discord or some other app @ me and I can even cobble a larger version together of one, to send for you to do some testing and see if it is more useful than having to manually change gels since using RGB to create a gel effect for the camera seems to be out as a use case, at least till we get around to making LEDs that actually produce every spectrum say with my multi material nanotube with LED and other semiconductor crystal molecular arrays embedded in them for ultra high power laser diodes that have next to no heat generation (thus super efficient, to make hand held lasers and even bio-activated laser formation from say someones eyes, while giving perfect focus with out moving parts of the eyes, for those that have had to have cataract correction surgery. :)

[@recompile]

@@ThomasAndersonbsf Did we watch the same video? I saw three minutes worth of content stretched over 18 minutes of improve. It was ridiculous.

[@nyobunknown6983]

@@recompile I saw 18 minutes of good information and 3 minutes of improv.

[@retlwiz]

This is truly eye-opening and I’m truly surprised not to have heard about this before. Incredibly informative.

[@ProfessaJ]

This shows that everything you hear on any other reviewer's videos is so uninformed

[@Katze822228]

did you not have physics in school? We learned this in like 8th grade

[@dbtest117]

Missed physics class in school?

[@jlmurrel]

@@Katze822228 - Bullshit. Your physics class did not cover this.

[@FlightPatternProductions]

This was insanely mind-blowing. I wish I had seen this before I filmed my short this past weekend, but this makes me hopeful for the shorts I make in the future.

[@indymogul]

glad to hear it. Thanks for tuning in.

[@Visethelegend]

Lol me too. Were you filming the aputure light this location shortfilm?

[@stalman]

The time spent watching this video had a crazy return on investment 👊🏼 I had never seen a lot of these tests before and it’s so powerful to see their real world impact

[@indymogul]

Yes, this problem happens with all RGB lights powered by LED technology. This problem is not brand-specific. It will happen with all industry standard fixtures on the high-end or low-end. We're two LED lighting companies and yes -- it will happen with our fixtures as well. If you're looking for lights, remember RGB < RGBW < RGBA < RGBWW. Also know that basically all just daylight or tungsten LEDs will not have this problem. We're working towards breaking through this problem with technology. But in the meanwhile, if you've been dealing with this problem, we just want you to understand what you're up against and how to succeed. - T

[@kurtlindner]

I love your transparency, and how you encourage consumers to be more knowledgeable so they can understand why they want better gear.

[@norriscreation]

It seems like "daylight" LED is mostly safe though. As long as the "daylight" isn't a result of RGB mixing?

[@timkang1980]

@@norriscreation yes. Tungsten white LEDs are the best that the technology currently offers, but future tech like the EtherLED we showed is going to be just as good, if not better, than HMI to match daylight. Right now, daylight LEDs at their best are almost as good as tungsten LEDs. They differ in that they render subtle hue shifts and saturation increases with any colored objects that have blue wavelengths. That explains why it's upper 70s instead of 80s. You will also see potentially more issues when shooting with film with daylight and using daylight LED to match.

[@ADD1770]

I didn't understand why RGB lights have this limitation. Does each node just deliver too narrow of a spectrum? And why would that be the case if we have LEDs that can reproduce a daylight spectrum pretty accurately to our eyes and the camera? I'm sure I still just need to learn some more about color science. Any in depth sources would be greatly appreciated. Thanks

[@timkang1980]

@@ADD1770 yes - if you look at the yellow gel vs RGB yellow diagram towards the end, you can see how narrow these spectral fingerprints are. The green diode spectrum "misses" the orange spectrum, so you get mostly only red reflecting back. Daylight LEDs and RGBA units have more information in the spectrum to fill out the gaps. But they are still not perfect and can have gaps in the spectral output that our eyes can't see on a gray card, but we can see on certain colored objects. Or, we may not see an issue, but a camera may see more issues.

[@noone6905]

Learning about spectroscopy in astronomy this actually makes a ton of sense.

[@blueskinblake9935]

There is a lot of overlap. Studying light (the whole electromagnetic spectrum) is the most fantastic and amazing subect ever as far as I think. From the birth of our universe and then stars all the way to the way light shines off some water lillies waiting to be captured on canvass, LIGHT RULES!

[@EddieKMusic]

Blueskin Blake Haha, although light studies don't intrigue me that much, it's cool that your're THAT interested :)

[@blueskinblake9935]

@@EddieKMusic thanks, I love to talk light, I start beaming with excitment!

[@blueskinblake9935]

@@EddieKMusic could not resist- apologies

[@soufianenajah4746]

@@blueskinblake9935 You just gave me a whole new section to go look for in the library ;)

[@jakebaine]

I learned more in this 18 minutes than I learned in a semester of physics. Love this!

[@Mew__]

CineLab: There was probably more info to be learnt that semester, though, so, that's on you.

[@sweetpeabee4983]

@@Mew__ :/ putting the blame solely on a student for learning material poorly when profs and course materials are capable of sucking too is super reductive, dude.

[@Mew__]

@@sweetpeabee4983: Internet and international source material. That's how I study physics at uni.

[@Whaever_1981]

Amazing video. Just wish we would have seen an example of a RGBWW vs Tungsten + Gel.

[@joaomaxado65]

Thank you guys. I learned more with your video than in my 10 years of LED experience... I'm light technician and I was surprised when saw the Orange amplis (we have a lot of Rock & Metal concerts) aren't so orange as we saw in my light shows and, now I know what to do .

[@jkhollywood]

Conclusion: Don't trust the RGB settings on your LED lights.

[@debtoralive4693]

Excellent job of explaining how what you see isn't always what you get. I had my doubts I'd understand this tech video, but I totally got what you were saying.

[@antiseth3964]

This has opened my eyes to a whole new perspective on lighting-coming from a guy who was wanting to spend a ton of money on RGB lighting. I'll get the one tunable RGB light, but I think I'll also be getting real gels for color-accurate lighting. Thank you so much.

[@geraldundone]

Loved this video! Thanks for tackling this. 👍💜

[@KubaMachnikowski]

Damn, I love the times we're living in. So much knowledge just laying around on youtube... That was awesome, thank you for your hard work making extremely good content.

[@Adam_Griffith]

Extremely informative! I have often wondered why things sometimes just 'don't look right' and now after this video - it makes perfect sense!

[@InspiRAWtion]

Great tips. Thank you! Did anyone else noticed both mics playing at 16:30-16:37?

[@Photographicelements]

Thank you for covering this! I've felt like I've just been talking into the void on this subject. So great to see all these tests! This is exactly why I still have all of my gels & use them all the time. Linking this video will save me so much time, thank you. (I'm still looking forward to the Aputure Nova 300 RGBWW panel LED).

[@chaopka]

You bet man. We had a lot of fun talking about this and Tim is incredible when it comes to his knowledge and passion for the topic. As for the Nova -- you can bet that everything you'll see from Aputure moving forward will be RGBWW at the very least. This is despite the very real cost of adding that extra W chip, even for our little lights like the MC and the Accent Bulbs.

[@Photographicelements]

@@chaopka I can't wait! Aputure just went to the next with this new technology. I love how I can use my vast array of photography Bowen's mount soft boxes and octabanks, and that Leko attachment tho. I look forward to LEDs that constantly improve the quality of light, (& increased output, but mostly quality). Thanks again!

[@toddpeterson5904]

One of the best KZbin videos I've seen in a long while. Even as an Arri certified lighting tech I learned a few new things. Anyone using LED's from any manufacturer needs to watch this if they want good color reproduction and avoid surprises in post. It should also be noted that much of the problem is not the LED's themselves, but are due to the way digital sensors capture color. Nearly all camera sensors are Bayer array sensors that can only capture one color per photosite in a Bayer pattern. This means that they are not full spectrum. They are interpolated, and have twice as many sites for green (because of humans' better perception of green). So you have the challenges of signal to noise ratio, the demosaicing, and then much less color resolution in red and blue. That's just at the raw sensor and debayering levels. A camera's color science, color depth, and color space also affect the color you ultimately get, even on a calibrated monitor. Filmmakers need to take all of this into account.

[@timkang1980]

Exactly, as we noted in the start and at the end, sensor tech and processing has equal weight. But if the LED tech was correct, it would account for all of this. Such is not the case in all scenarios, and we don't see cameras changing any time soon. Gels have been fine enough for cameras and eyes, so citing the camera issue is unfortunately part of the obfuscation sometimes from lighting manufacturers to avoid directly addressing the inherent problems contributed by their own tech. Especially when they claim to have gel numbers and x y coordinate control but don't actually convey the world with correct spectral fingerprints. And the lack of a correct green diode is something no one has solved yet.

[@toddpeterson5904]

@@timkang1980 Very much agree. Unfortunately CRI and TLCI only confuse the issue and serve to only weed out poor fixtures without really addressing LED's current inability to gel, even with something as basic as a CTO. Again, thank you for highlighting (see what I did there?) this issue. I know that it's one that market leaders like Arri, Quasar, DS, and Aputure (e.g. you guys) are aware of and are working on improving the tech. In the meantime, the more filmmakers that understand LED's limitations, the better, even if you are using Skypanels or Quasars

[@hugaluga]

Fantastic content! At first I thought this was focusing on subtleties between brands, but the back half of the of the video was really illuminating. No pun intended... it really opened my eyes to the differences between how I perceive an LED light source and how a camera perceives an LED light source. I might need to re-evaluate some of my amateur equipment choices and break out my gels more often. I've been blaming my camera, but I should really blame my light source.

[@ProfessaJ]

i always recommend a small packet of gels with my quasar qlion kit. it's important to still have accurate white light behind those gels too.

[@DANAMIONLINE]

My mind is blown. This requires a rewatch. Thanks for creating a video on this topic.

[@pjmcbroom]

Thank you so much! Truly educational. I have been doing lighting design for my local community theatre for about a year using Tungsten lights, and we recently made the switch to LED stage lights, with RGBW chips. I had a hard time adjusting, and I just didn't like the difference between the tungstens and LEDs, but I didn't know exactly why that was the case. But now I understand, and I appreciate this video a lot!

[@zachcrawford5]

You may also want to have a few UVA and UVB emitters when simulating day light. Most people and cameras can't see it but many common materials fluoresce in visible ways under UV light and that visible fluorescents can even be strikingly different depending on whether it is being stimulated by UVA or UVB light.

[@jeffkardosjr.3825]

Maybe even near IR.

[@auchich.3218]

I love the new audio setup for the interviews, it adds a lot to it, thank you very much!

[@LearnLightAndSoundSessions]

Fascinating info - thanks for this Ted and Tim!

[@LuisFernandoImperator]

Curtis, you're one of the greats when it comes to quality of knowledge on KZbin.

[@DoItWithDave]

What up Curtis! Been watching your content for a minute.

[@curtisjudd]

@@LuisFernandoImperator Thanks Fernando!

[@curtisjudd]

@@DoItWithDave Hey Dave - good to hear from you!

[@TylerKidd]

This is huge!!! I've had similar dicussion with my professors in college but nothing this in depth. 20 mins of pure gold!! Thank you guys so much!! 🙏 Sharing with my friends 🤘

[@indymogul]

glad to hear it! Please definitely pass it forward.

[@Wuz314159]

What about fixtures other than RGB, RGBA, & RGBWW? ETC Lustr or even Colorsource w/ Lime?

[@anhdvids]

I wish there's more Ted and Tim collabs. They really gelled together for this knowledge drop

[@norriscreation]

The skin tones and RGB make SO MUCH sense now. I was always wondering why I would have skin tone issues with one setup but not the other.

[@ThatFailedartist]

the light doesn't change your perception of color, its literally changing color. your eyes are just absorbing the new color that it is.

[@sweetpeabee4983]

Idk. Like, if something has the physical property that it only reflects blue light, even if it appears black in candle light, it seems plausible that you might still call it a blue object because it is still *capable* of reflecting blue light, just your eyes aren't seeing it in that light. But again, idk. This seems more a matter of philosophy than anything.

[@AverageJoe8686]

@@sweetpeabee4983 That's not what the OP said. Your perception of color will change when you do the right drug for example. Not because there is a different ratio of photon energies. There are Optical Illusions, but those tend to be mostly geometric, or for color using persistence of vision. So just keep looking and your perception of the color returns to normal.

[@ThatFailedartist]

@@sweetpeabee4983 you need photons for color, so in the dark the blue looks black because there are no photons, but the object will still reflect light as blue.

[@pepe6666]

fantastic to finally see this explained properly with the spectrums shown. a key takeaway is that yellow can appear to be shown by using RGB lights, but thats just our brain compositing it. yellow is an actual wavelength which you need to push out of lights to illuminate a scene

[@davidsklubal]

Loved this video! Please more advanced concepts like this, I almost bought tunable rgb lights thinking I would have so many great looking options to film with.

[@timkang1980]

You can still do a lot with RGBWW lights! The lesson is to test things out to understand for yourself and your workflow what will work for you.

[@linusnygren]

So nice to watch an episode where you're a bit calmer, Ted :) informative and eye-opening to me as well, good stuff!

[@KinskyD]

omg - tim is the best - Thank you both for creating this video as a tool of communication! much love.

[@theoriginaltommysteward]

Might be the most helpful video ever. I KNEW gels looked better than light presets but I never actually investigated to find out if I was just seeing things that weren't really there...this cleared that up completely.

[@apedestrian3899]

I'm glad this channel has become relevant and popular again! I've missed it!! This is a great new format!

[@JustinHappenstance]

That was very interesting. The white light with the gel has more tonal value because it's not limited like the trimmed specific frequency.

[@scarlet8078]

This was an exceptional video! Every designer deals with this. The set will look great but the stills and even film afterwards doesn't capture the yellows and oranges. Recently had a campaign shot involving a model positioned by a glowing object and meant to hve yellow reflected light over her upper body. I basically had to paint the effects in the final images which made me wonder why we paid for the lighting at all

[@timkang1980]

let's just say, this video came out of suffering similar experiences out of life, not out of theory. ;-)

[@douglaslandin5547]

I work in TV news and this video explains perfectly why wardrobe colors don't appear correctly on camera in the studio! Time to convince someone to redo the lights... What's that? Not important enough for the expense? Drat...

[@gwenblackhorse4835]

Indy Mogul's videos are my 'go-to' for cutting edge technical film information! Love you guys and thank you! :D

[@ein57ein]

You're blinding me with science! Excellent video for the nerds among us.

[@Hello2U4s0e4r]

this was PHENOMENAL! thanks for the info

[@indymogul]

You're welcome! Tim is an amazing and talented guy.

[@Kokorba6iqta]

Great and very informative video. Also a big plus for Quasar for showing real life results that can help in your work.

[@Improtaproductions]

Fantastic video. Thanks for taking the time to make this. It is really refreshing to hear from people that actually show and demonstrate what they say. Great job!

[@creatingacomposer3838]

Loved this video, really hope for more advanced stuff in future. Helped me decide against a Godox, purely gonna hold out for the right light that isn't going to skew my colours. Thank you!

[@mgproductions2007]

Legitimately good and very informative eye-opening video. Glad to see Indy Mogul is still going strong over 10 years later!

[@NerdSyncProductions]

Fantastic video! Super helpful to see the visual demonstrations. Keep it up!

[@emmanuelc9601]

Does the source light make a difference to the quality when using gels (when daylight balanced)? Or does the camera read them all the same due to the gel

[@spfcrod]

Man, you are providing great content. Keep doing this interviews and discussions. The amount of knowledge on these are incredible! ✌️

[@Gilotopia]

Technology connections made a video that covers this in a more accessible way.

[@AliShaikh1]

He kicked off so many youtubers making similar videos

[@UltimatePerfection]

Yup, I can't recommend his channel enough. He covers complex subjects in a way a complete layman can understand.

[@IanTester]

Was it better? I thought he waffled on showing lots of examples for too long and not getting to the underlying science. This video shows the spectra (plural of spectrum) and seems to get to the point quicker.

[@Tridd666]

Yeah I'm tired of hangers on Be original for once

[@CaveyMoth]

Aw, I wish you guys used a Rubik's Cube for demonstration.

[@sauromatian]

Check out the thumbnail for The Weird World in RGB by Technology Connections.

[@JasonBojangals]

Thank you so much for this video! There's been instances where I've really struggled in post with colors, because it looked red or yellow on set but garbage in editing and now I finally understand what's going on! I'm forwarding this to so many people!

[@timkang1980]

Thank you for this feedback! This is the exact realization we hope would happen.

[@ethernectar]

Great examples - thanks. We shoot with strobes for product photography, but have experimented with LED for smaller products and see color issues like this pop up.

[@KelvinKaesa]

would be cool to see these experiments redone with a dark skin-toned model included. Very informative.

[@johnmcnally7812]

My Cinematography teacher was really emphatic on how to light darker skinned people properly. He said that cinema had done Black actors a serious disservice, and I would agree with that sentiment.

[@timkang1980]

Our model didn't show, so we only went over the information that was in the image.

[@Writtenmirror]

Black skin reflects light a bit more so you have to be sure red is represented adequately or you end looking jaundiced or ashy. Adding a oil based moisturizer allows for some interesting colour manipulation but yeah like you I'd need to see it done here. I think with Black skin you have to use shadow deliberately to get what you want. So casting colour is nice but not over exposing is key.

[@FFFan3445]

@@johnmcnally7812 Hurr durr black peepo is victimz That's gaslighting and it does a disservice to blacks.

[@dustinjames1268]

@@FFFan3445 Nobody was trying to say it was intentional or some kind of conspiracy Most people (even professional photographers) dont fully understand how colour works and a halfassed job is still a disservice. If I tried to fix your car and broke it more, it doesnt matter if I did so intentionally, it is still a disservice.

[@colinjudge1261]

Awesome video. Thank you so much fro dropping the knowledge bombs on us. A really complicated concept broken down over less than 20 minutes until it can easily understood by anyone. Love it!

[@bliiblaablue]

Without knowing this at all, I went the gel + daylight led route just because it was the cheapest combo.. Turns out it's the most effective also, great! :D

[@tubeman1983]

I was in two minds about getting a bicolour LED light or just a daylight LED or Tungstate LED light because of price. But now I know it's better and cheaper to use gels. Is daylight LED better, worse or the same as Tungsten LED to use with gels? Why did you go with daylight instead of tungsten? Advantages / disadvantages? Thanks! 👍

[@bliiblaablue]

@@tubeman1983 I prefer daylight since it's the one (kelvin) that I use the most anyway. I feel like it's easier to gel 5600k as a starting point since I use 3200k, 5600k and 6500k+, making 5600k the middle. You will also find 5600k leds to have the highest output of light compared to rgb or bi-color. With bi-color the highest output is the middle (combined the warm led + cool led), so if you use 3200k the most, you will loose 50% of light if 5600k is the middle, get my point?

[@tubeman1983]

@@bliiblaablue Thanks for your insight!

[@AlbertoTrianaDirectorDP]

Love it! Great information for filmmakers out there with the misconceptions of RGB lighting, which I honestly had the same thoughts lol. So thank you for helping clear up a few things! Loving all the collabs and informative content!

[@rt.]

Question is why no mention on (grading) monitor used to judge those colors [although of couse waveform/histogram is very crucial], because that's another part in the color pipeline* *not the only missing one & there's a lot more depths on other parts too, obviously

[@coleudall14]

This is incredible content. Learned so much, thank you! And thank you Quasar for being so open and honest.

[@abarrutia]

Great Video!! Would be nice to see the RGB color rendition difference between different cameras and Color spaces. And do this same test comparing the latest sensors of each manufacturer and see how they render Color RGB and gelled lights.

[@nickyoon8619]

latest videos lately have been a GAMECHANGER. No camera this or camera that. Real problems followed by real solutions, thank you

[@KlimovArtem1]

You forgot to mention flickering of LED light. Many people use it at home, also all modern Christmas light are LED and almost all flicker like crazy, but invisibly to a naked eye. You have to search really hard to find a good quality LED bulbs or garlands that don’t flicker.

[@jeffkardosjr.3825]

Not invisibly to many people. People with different flicker fusion thresholds.

[@SunDevilThor]

So if I’m understanding this properly, using colored gels on a 5600K light with camera WB also set to 5600K is vastly better than using any type of RGB light, if you care about true colors and the image overall looking more pleasing? Will the same work on a 3200K light with camera white balance also set to 3200K?

[@timkang1980]

Yes, exactly as you say. Same goes for 4300K and any other white color temp that has enough information in the illuminant spectral fingerprint. Yellow will especially be better at 3200K since most cameras boost the blue channel to get there.

[@iLikeCoffee777]

Excellent video! This really dials in the need for a light meter and good set of gels on set.

[@luketurnermedia3774]

Would love to see how hive lights hold up to this test because of their 5 and 7 color mixing tech (no white chips)

[@timkang1980]

They will do pretty well, but saturated yellow will still not quite hold up to real gel saturated yellow over white.

[@noneban]

this is honest, and therefore humble, thank you for such quality content.

[@FragEightyfive]

4:24 such nice lighting.

[@mathisbonneau2454]

Nice. Really interesting, I've got answers of questions I was asking myself and everyone since years ago, and nobody ever gave me a clear answer. Thank you guys from France !

[@Writtenmirror]

Helpful AF! Love your videos man

[@LazyMitchell]

Probably one of the best videos you guys have made. Really good and fast information

[@johnmcnally7812]

Quick question. You guys talked about how big a difference there is between what the eye sees and what the sensor picks up. Is that down to sensors and the Bayer pattern? Would there be such a marked difference when using emulsion? How much of the difference is also down to human perception re: context cues (like the red strawberries that are actually grey)? I would love a follow up video and if you could do something about colour and neuroscience or something.

[@timkang1980]

Hey John, this has nothing to do with Bayer pattern in terms of layout. It has to do with the combination of: a) the OLPF, b) the three different filter dyes/paints for the R G B photosites, and c) the inherent sensitivity of the CMOS photosite. Yes, there will be a slight difference with film emulsion, because the crossover points differ a little (as you see in the one slide), the shapes of the R G B spectral fingerprints are a little different, and film is sensitive down to the near UV region (about 380nm). A lot can be done in post to manipulate these sensitivities with camera matrixing to match the film response, but one can't do that in the near uv region. That's part of the reason why daylight leds score lower in SSI; SSI considers extra region that most digital sensors can't see, because film can see it. A lot of human perception does come from context cues and habituation. This was already a lot of info to put into one presentation, and if you listen to the podcast, it only scratches the surface into the seminar I usually present and what's going on under the hood.

[@johnmcnally7812]

​@@timkang1980 Hi Tim, thank you very much for your in-depth answer. I'm definitely going to re-watch this one a few times to let everything sink in with your response for reference. And listen to the podcast (ep. 26) before I come back with any more questions (though I already feel a question brewing about emulsion UV sensitivity, SSI, and ACES in my mind). Do you have any platform for your usual seminar on the topic? Re: human perception/context cues, I didn't mean to make it sound like you'd left it out. I think you explained what you were there to discuss on this particular video with incredible clarity (and blew my mind in the process). Discussing human perception and context cues is something I hope Indy Mogul can get you back for some time on a dedicated episode (and podcast). Thanks again, and hope to see more content with your expertise!

[@jamessauermilch]

amazing guys! does the problem only occurs with yellow or with all the colors? or are there differences from color to color?

[@reilinjoey]

Damn guys, you’ve been absolutely killing it lately! Really loving the in-depth look you’re giving into the thought process of so many professional filmmakers. I’ve learnt so much about lighting, sound, framing, social engagement and more from these sick videos and hope you’ll make manyy more. Skkrtt congrats 🔥🔥🔥

[@indymogul]

so glad to hear it! Thanks for supporting and tuning into the show.

[@gary7vn]

These guys know their stuff. Thought provoking! Informative. (looks for videos on shooting in black and white...)

[@ArchWayE]

Holy guacamole! As I was researching for an explanation of color outside of scholarly publications! You guys totally rock!

[@AngyIronman]

That is a LOOOOOOOOOT of information to drop in under 19 minutes. Thanks guys for an informative video!

[@EposVox]

Fucking fantastic video, guys. Great that you two got together for this. I'm only finally getting into gels.

[@MarcosElMalo2]

Ted, this vid was fantastic and, if you don’t mind the pun, illuminating. Thanks for cutting through the misinformation out there. I don’t know if you have the time or inclination, but I’d love to see a video focused on using various gels with RGBs and mixable LEDs. Standard color correction gels would be fine, plus any party gels you favor. Thanks!

[@robbedoeslegrand236]

How about the ultraviolet in daylight. It make phosphorescent materials light up as well, but is often(always?) missing in studio lighting. It is however used in the grafical industries a lot to proof colours.

[@timkang1980]

This is definitely an issue. That's why SSI takes it into account, since film can see it (digital has a harder time), and yes, there are some phosphorescence and autofluorescent behavior to objects as well. But no LED fixtures in the film world have it because of the fear of the idea of putting UV into a product, and it also will cut into efficiency for almost invisible results.

[@neopotrebitel]

Wow this is so informative! Really important info that is not widely known! thank you so much for these videos. As an aspiring cinematographer this is invaluable!

[@LilChuunosuke]

Tempted to send this video to a friend of mine who got mad that I took a photo of one of my drawings and edited it to make it closer to reality bc that was "lying." He doesn't seem to understand how drastically light can effect your perception of an image and a color, especially when taken out of the context of it's surroundings. The amount of an effect lighting can have on how we see an image is absurdly powerful.

[@markdp123]

Excellent demo of Tim’s Quasar Science research. Thanks for doing this !

[@tallguynow]

Does this still apply to the newer RGBWW lights like the Nova series lights? I’d love to see this depth of study and metrics revealed on their new products.

[@themusicweekendernorway1018]

Great insight! Thanks for this conversation!

[@brunobilandzija1823]

What an amazing episode! Thank you! 🍀

[@marbyn17]

I'm a lurker most of the time and rarely comment. But this is amazing. I learned so much!

[@MarloweHolt]

I literally just ran into this problem last week! The red LED light came out pale orange on camera, but the light that was cast from the light was red. Good video!

[@studiojeka9274]

This episodes keep getting better and better every time!

[@evananderson8452]

Is there a website that has the complete list of wave forms for the various lights.

[@bpoole007]

This is practically Gerald Undone level of explanation! Good job and thank you!

[@JIYkp]

Bold moves. Respect for someone from Aputure talking about this since they built a lot of their early clout advertising high CRI.

[@emmanuelc9601]

Does this also cause issues with 35mm film too, or just digital?

[@JeffSpeers]

Every time someone watches a new camera review KZbin should require them to watch something valuable like this video.

[@bob76451]

That was super fascinating. Thanks, Ted and Tim!

[@michaeljibrin3164]

How does this compare to the new 600c pro???

[@KBTfilms]

One of the best lighting videos I've ever seen. Thank you for the information!

[@RacksmileSalek]

Quality Content, Quality Lights! Aputure & Quassars Science A+++