Flashlights 101: Tint talk! (CCT, BBL, DUV and bins)

Have you heard the terms like CCT and wanted to know more? Here is a beginner's look at the terms CCT, Tint, BBL, DUV and bin.

[@LuxWad]

Awesome video! You've explained everything very clearly and provided helpful examples

[@eckyeckypikang]

I'll be saving this one to review! I'm not sure if you know just how many foggy concepts you've just cleared up in 9 minutes... This is not just excellent information, it's excellent information explained VERY well!

[@Gabe-Fox]

He definitely 'shed some light' on the topic 😉

[@wilx2703]

Absolutely amazing video, really well put together.

[@AtrixInfinite]

Ok but I was actually looking for a color-theory-oriented explanation of color temperature. This is the best I've found, most other videos just demonstrate the absolute basics like the kelvin scale and that's about it.

[@averageedcguy1392]

I’ve been on r/flashlights lurking for a while and NEVER understood the relationship between DUV, BBL, tint, and CCT. You explained it all SO well in this video!

[@cheule]

Glad to help!

[@xerxestelevision6666]

Holy shit, when you started talking about stars I was out. I’m totally colorblind and I was doing my best to try to follow along but alas, my mind is blown and I have no idea what you’re talking about! Your videos are the best, I’ve been watching for a long time. Thanks for all the effort you put into these for us!

[@skoto8219]

As someone who’s “color-sighted” I could barely follow this so I can’t even imagine watching this colorblind lol. It’s an amazing video I just am not familiar enough with the terminology yet to be able to take it all in

[@Lucas-ck1po]

Came here from Reddit, wonderfully informative video! Thanks Cheule!

[@felixf5211]

Very interesting. I work with high-pressure sodium lights - 2100K, ~140,000 lumens a pop without ever stepping down. A bunch of them. As such, I'm genuinely surprised that anyone would want a 2000K light, or a 2700K for that matter. Under them, everything essentially looks redish/orange. Not sure how and why that's desirable. As for my own flashlight preference, I tend to go for a cooler CCT, as I look at 2100K all frickin' day. Learned a bit from the video. Appreciate it.

[@cheule]

I think the reason is that not all 2700K temp lights are created equally. This is where CRI comes in. Sodium vapor lamp are low CRI, and the 219b and 519a emitters are around 95 CRI

[@balsalmalberto8086]

Your eyes adjust to the cct at night. no sht the lower cct looks strange at the day time.. 1800k high cri is as good as and usable as 2700k high cri at night. HPS/HPS are like negative cri or very low and monochromatic, meaning that ansi chart looks like a straight orange line with no other colors. they are efficient and do not pollute light as much, and have a nostalgia factor to them but they are bad for visual driving and identifying.

[@MADHIKER777]

Amazing explanation of timt mixing strategy! Well done!

[@cheule]

Glad you liked it!

[@jeffholthus2009]

Holy crap Batman. I'm recently into lights again. This was the most helpful thing I've run across. Heading to check out your other 101 vids....

[@cheule]

Glad it helped!

[@Jorge-ft9oh]

Beautiful explanation! I've been looking for this and I am impressed by this and the rest of your videos I've watched. Congratulations and thank you!

[@JonFung808]

It's been 10+ years of flashlights, and for the first time, I now know what bin is...beyond "good" and "bad" bins...thank you for this, sir!

[@beardedraleigh1649]

Very cool. I’ve been a flashlight enthusiast for years now, I’ve understood these things enough to know I like 5000k and under. Very well put together video and helped me understand a lot of things.

[@cheule]

Thanks for your kind words!

[@Berserker26]

Your best one yet

[@dannykane8096]

That was a really well done, informative video. I hear these terms all the time and think the people that use them are some sort of flashlight genius, but it’s just like anything that is new. You learn the language, you understand the concepts.

[@whydoiliveinNY]

Great video!

[@smrchk2133]

Very informative and well explained! Thank you.

[@luccagiannechini2818]

Excellent intro, way to dig past the jargon and explain the fundamental concepts, haven't seen many other flashlight enthusiast videos do that!

[@relayerrelayer8226]

Thank you for highlight on this subject in a 'Convoy T2 sst20 4000k high cri' format.. simple, clear,easily grab,and short 😊👍🏼 Greetings from the equator 🇮🇩🙏🏽 Cheers☕

[@zGJungle]

Dude, you house must be like that scene from the Matrix, when Neo is shown the gun racks in the training room, but you have lights !

[@jon_slider]

outstanding.. very clear and easy to follow

[@cheule]

Glad it was helpful! I know I used to hear people throw around terms like BBL without any explanation and it was too scary to post asking what they meant. So I made this to demystify it all.

[@Brennonicolini]

Absolutely brilliant video!!! Thank you very much for this!

[@papa_pinguin]

Thank you very much for great explanation!

[@stephen_hynes]

Great voice! Very nicely explained. Thank you!

[@Knifeguyyy]

This was a great vid. Explained a lot I’ve been lost on nice work. ⚔️🔦👊🏼

[@TheFrogInYourClosetWatchingYou]

E21A 2000k is a beautiful golden orange I have a D4V2 with 2000k/3500k led's and it's excellent. I also got a Convoy S11 recently and it's moreso a deep yellow sunset color compared to the deep orange candle type color. A part of me wishes it were all 2000k led's but the 3500k mixes in real well and makes it more practical compared to 4 2000k led's especially cri wise I'm surprised you don't have anything higher than 5000k for the review. Can't say I really blame you I'm a fan of 2700k-4000k color temps for most purposes. I love going even lower as well mostly for use as mood lighting or indoor lighting in general when I don't need high cri lighting.

[@TheFrogInYourClosetWatchingYou]

The convoy s11 is the 1800/2000 version by the way.*

[@boogaloo_7662]

This is an amazing and very informative video. I honestly don’t mind some green in my lights. But I prefer something like a sst20 4000k. Going to be getting a flashlight with a E21A 2700k soon to see how I feel about a warmer tint.

[@lisovyj]

Дозвольте поцікавитися вашими враженнями від 2700. Який подобається більше?

[@ZaarsShed]

Ingenious explanation! Thank you!!!

[@jmcg_8]

This is such a helpful video. I'm curious if you'd be able and willing to share all that documentation and information you've put together? Like one giant .pdf or something? Just a thought. Thanks so much for making this. Enjoyed your first podcast, too!

[@cheule]

I made this video by aggregating information that was largely available on BLF. So please, go to budgetlightforum.com and find the source info… then dive deeper!

[@katebloggs8243]

@@cheuleThere is sooo much info there . . . Why not provide a link to a specific thread you think is helpful?

[@000haker]

I have always liked and had flashlights but I recently got into the enthusiast grade lights and I'm all about that ROSY life.

[@cheule]

You and me both!

[@johngarritzcx6733]

Although NOT really 4000k but 5000k my nichia219B is also rosy and instead of theCree.s more colour conistant 😊😊😊 i like it!!

[@darrensmith6782]

I always seem to like lights with the sst 20 4000k. I compared it with my Nichia 219c and I like it better. I was playing with my new emisar D4V2 with the sst20 and noticed it was almost identical to the mid day sun on my wall. I like bright white as well but for work indoors I need a floody neutral light.

[@AtrixInfinite]

my girl has a BBL. good video.

[@engineeringinsight1338]

Super useful thank you !

[@twrcrew8852]

I still think the whiter/bluer/greener stuff looks awesome and the orange and yellow looks old/dim. Idk. might be I'm just weird lol.

[@cheule]

It’s just taste, and yours is as valid as anyone else’s!

[@Gieszkanne]

I dont like the rosy tint either. Do you know why the tint seems to disappear on higher lumen output?

[@multimargejta123]

You are not normal, now I cant stop buying flashlights..

[@cheule]

Sorry!

[@orendz7740]

Thanks for this. I’m a newb just trying to learn while I wait on my D4v2 to ship to the house. Are you on r/flashlight?

[@cheule]

Yes I am, u/-cheule-

[@MrGatlin98]

How does CRI factor into this? And what is the difference between R9080 and say 90 CRI?

[@cheule]

R9080 is a moniker for “90 CRI for R1-8 and 80 CRI for R9”. R9 is an important red color that is left out of standard CRI rating. So a light could have “90 CRI” and yet only 65 rating for R9 red. So that’s where R9080 comes in…

[@MrGatlin98]

@@cheule Oh okay, that makes sense. Thanks!

[@_Chef_Jeff_]

great video!!!!!

[@cheule]

Glad you liked it!!

[@johanvandersandt8904]

How about that hahaha. Awesome explanation!

[@drugtalk101]

thank you

[@cheule]

You're welcome!

[@johnmpifer]

Well-done. Thanks. I think I’m becoming a CRIbaby. Your favorite high CRI diode?

[@cheule]

Definitely Nichia 219b 4000K. I love sw45k for it’s consistently rosy binning, but 4000K looks better to me at night and has slightly better r1-15 values even over sw45k. I also recently got a BOSS FT with sw30 that is gorgeous. So beautiful, but not appropriate for edc/daytime use.

[@johnmpifer]

@@cheule I only recently got interested in modern, lithium, rechargeable LED flashlights, and bought an IF25A in 4000K. I was a bit apprehensive about going with the 4K, due to the fact that the 4K is not quite as bright, but I’m really glad I did, because I absolutely love the color of that beam!

[@littleacorn98]

Wow 😵‍💫 school Thank you 👍👍👍👍

[@multimargejta123]

What about adding the additional RGB led to the white ones, so that you could add the color to the existing white. Like if you want more pinkish add red etc.

[@smokinquack89]

Sooo......What is the best temperature? Thanks!

[@cheule]

Let me state this disclaimer: everyone has a different opinion on this. Now let me tell you my pick: 4000K. Anything from 3500K to 4500K is in a zone I like, with 4000K being the temp I always come back to. I have lights ranging from 1800K to 8000K, because variety is the spice of life. And anything from 3000k to 5000K works for me. But 2700K I usually find too warm, and 6500K too cold.

[@victorvannatter312]

So what number, +duv, is considered objectionally green?

[@cheule]

For me, 0.0030 and up. I can tolerate up to around 0.0020 or so

[@victorvannatter312]

Thanks for the reply. I don’t have any way to measure it, but I know I just added some Lee 1/8 -green to a Wurkkos ts21 with the 4000k emitters. It wasn’t bad before, but after being used to my 519A, it looks much better now. Just slightly pink.

[@mattnstewart262]

any chance you can make this presentation available for download?

[@redactedcanceledcensored6890]

What's wrong with greenish tint? I just want a flashlight that lasts more than a few weeks...

[@cheule]

It makes people and objects look undesirable. People look sick, food looks spoiled. Try two flashlight side by side, one above DUV and one below DUV and it becomes very clear.

[@Healcraft]

this is a parody video right?

[@cheule]

Nope! There is a flashlight enthusiast community that cares about CCT and tint greatly.

[@jimmyross1672]

wow i didnt know there was so many kids of colors that LEDs can produce lol so cool now im really intreasted in diffrent types of LEDs lol

[@jimmyross1672]

lol a video under 20 minutes lol about dam time lol ive been watching all your videos till the end so you get more money lol that way you owe me a 30 dollar flashlight lol

[@TheFossilChannel]

excellent video!