This was the most comprehensive, didactic and objective explanation about light output that I've seem a bunch of other guys tried to give. Thanks a lot!👍
Great explanation. I've telling my friend you can't just go with the highest lumens but he never listens. I can't wait to show him this video. Thank you.
a good note on optics and how it relates to the power of a light source is always remember light houses could be seen for massive distances weather and of course horizon permitting even when they only had a simple oil lamp as a source all thanks to the Fresnel lens.
Good video, thanks Would be nice if you could do comparison of some products and also advise on what figures we as buyers need to consider for different uses.
Thanks this was very helpful. Now if only light manufacturers could list all three ratings on their products so we could make an educated decision about what to buy that would be great. Thanks once again
Candela = Lux x distance squared. So candela is the strength of a light hitting a surface at a specified distance. For example, a light measured at 1000 lux from a distance of 10 meters has a candela rating of 100,000 candela.
Would love to see a side by side walk through of several of your best selling lights at different price points with the utilization of the terms and descriptions from this video with both controlled environments (factory) and uncontrolled (trail)
It’d be nice to have a list of generic purposes for certain lights. I see guys with spot patterns for the side of their rig for camping and a flood for their bumper mounted bar. For example: Ditch light preference: flood with X lumens, X candela, X LUX. Forward facing light: flood/spot combo with X lumens, X candela, X LUX. Etc. Some sort of generic list like that and then of course everyone can do/get what they want after that. But I think a generic list would be a great starting point ESPECIALLY for all the new people getting into off-road who ask the same questions all the time on Facebook.
So now I have to take a course in the local university to buy a light bub? LOL A video about how to determine which light bulb (without the secretes of the universe) to purchase will be well appreciated.
So, how are you computing the Lux and candelas for certain lights? For example, when I buy a FLEX fixture from you folks, I get that bright spot, then the dimmer peripheral region. If I need 500 lux to see something, and the fixture has a 600 lux peripheral band with a 1500 lux spot that holds a pretty solid 1500 lux throughout that circular region, then you have a lot of marketable light for that fixture. -- Sometimes, I inclined to ask for a cardioid lux map. But really, a picture of the beam on a wall with a measuring tape is really all we need to pick a great beam.
Question: at what point lumens - candela exceed our ability to see? 20/20 vision. Assuming a 1000 Lumens throw equal candela are we able to see clearly or it does not matter? ( I manage to confuse the question, I think you would know) Thank you.
I understand lumen and lux but not a candela 😞. Anyway, can I use smartpone's light sensor to measure my flashlights lux count? All I do is putting my phone 10 meters from my flashlight?🤔
A metric you can use is candela per lumen ratio. You see that one light has 50,000 candela and the other has 10,000, but they both have 5,000 lumens. I'm sure a high quality lighting company like KC Hilites lists the candela of every light along with lumens, right? More candela for the same lumens is a spot, and fewer is a flood. Lux tells you nothing. Candela is lumen per steradian, or degree of an arc. This is also know as throw. The longest throw flashlight in the world right now puts out about 700 lumen, like a 2 C-cell flashlight, but it has a candela rating of over ten million candela and can throw over 3 and a half miles. Lumens tell you how many photons and candela tells you how tightly they are packed. You need both.
Seems strange then that we use Lumens and even Candela for flashlight ratings. Isn't Lux more helpful? Candela makes sense when a lot of light is being produced over a huge area in all directions - you wanna know how much is getting on your book vs. the back wall. Lumens makes sense from a manufacturing standpoint. But shouldn't we all care about more about Lux for flashlights? (very specifically speaking about flashlights).
KC HiLiTES excellent. This may not be your field per say but I’m looking to lift a TRD Pro. Rough Country said they don’t supply kits for a TRD Pro. Can you point me in the right direction? Maybe a company KC is affiliated with?
Oh, this is about vehicle! I am using common light that we can get from the light section anywhere in the world. No wonder why I was wondering this guy is trying to con me, 10 meters is too far, I am not seeing anything in 1 meter2 ! Hahahaha!
So glad you explained that I've had way to many argumentative discussions about lights and lighting ..... you can bet I'll be showing this video....
This was the most comprehensive, didactic and objective explanation about light output that I've seem a bunch of other guys tried to give. Thanks a lot!👍
"a jeep weighs as much as a tank, you know who you are" i feel attacked
Great explanation. I've telling my friend you can't just go with the highest lumens but he never listens. I can't wait to show him this video. Thank you.
Great explanation and visuals for this subject! Thank you for creating this!
i just studied for my finals thanks to you man ! :D
Clearest, most useful explanation and comparison of these concepts I have heard. Well done.
a good note on optics and how it relates to the power of a light source is always remember light houses could be seen for massive distances weather and of course horizon permitting even when they only had a simple oil lamp as a source all thanks to the Fresnel lens.
A very concise yet crystal clear explanation with simple examples 👍
Yes!! Been waiting for this to drop!!
Awesome job buddy
Good video, thanks
Would be nice if you could do comparison of some products and also advise on what figures we as buyers need to consider for different uses.
Thanks this was very helpful. Now if only light manufacturers could list all three ratings on their products so we could make an educated decision about what to buy that would be great. Thanks once again
YOU CLEARLY EXPLAINED,SIR...
Candela = Lux x distance squared. So candela is the strength of a light hitting a surface at a specified distance. For example, a light measured at 1000 lux from a distance of 10 meters has a candela rating of 100,000 candela.
Great explanation!
i am a big fan of flashlights, but 2day i understand how to buy for your needs, tons of thanks
Great information! Love the educational videos.
Would love to see a side by side walk through of several of your best selling lights at different price points with the utilization of the terms and descriptions from this video with both controlled environments (factory) and uncontrolled (trail)
Definitely could be one long video or several great videos a whole series if you break down by price points or categories of beam
Thanks for the helpful video. I'm setting up outdoor cinemas and this has been useful explaining lumen, lux, and candela
I must say that i am now starting to understand this explanation. Thanks alot!
It’d be nice to have a list of generic purposes for certain lights. I see guys with spot patterns for the side of their rig for camping and a flood for their bumper mounted bar. For example:
Ditch light preference: flood with X lumens, X candela, X LUX.
Forward facing light: flood/spot combo with X lumens, X candela, X LUX.
Etc.
Some sort of generic list like that and then of course everyone can do/get what they want after that. But I think a generic list would be a great starting point ESPECIALLY for all the new people getting into off-road who ask the same questions all the time on Facebook.
Thanks for shining some light on this topic.
this is a great presentation, keep it coming, thanks
Can we get a video on KC fog lights
Very practical explanation. This now makes sense.
Thanks a lot bro.
Nice video. Please bring back the KC Hilites 46 Series/770 LE, you'll sell a ton of them!
So now I have to take a course in the local university to buy a light bub? LOL
A video about how to determine which light bulb (without the secretes of the universe) to purchase will be well appreciated.
Very Clear Thank you. Prof KC.
Excellent presentation. VERY ILLUMINATING!
Dude the beat is addictive
This video was so helpful! Thank you!
Ironically I don't even drive, but this was educational. Thanks.
Useful information! Thank you.
what is the best option in lumens for a video projector?
Gravity pro6 wide 40 video comparison?
So, which should I be looking for my truck? The Highest lux or candela?
So, how are you computing the Lux and candelas for certain lights?
For example, when I buy a FLEX fixture from you folks, I get that bright spot, then the dimmer peripheral region. If I need 500 lux to see something, and the fixture has a 600 lux peripheral band with a 1500 lux spot that holds a pretty solid 1500 lux throughout that circular region, then you have a lot of marketable light for that fixture.
-- Sometimes, I inclined to ask for a cardioid lux map. But really, a picture of the beam on a wall with a measuring tape is really all we need to pick a great beam.
very helpful video for purchasing flash lights
thanks
Thank you
So if I understood this correctly, the best light would be one that is high in lumens, a large LUX value, and a high Candela amount. Right?
Lol, I'm here because I wanna buy a flashlight and the box have ton of pictorial symbols and I wanted to know what it meant. 😂😂
Exactly!! Me too! Now off to shop...😉
Outstanding in REAL Information
Thanks to you for saving my grades
Telling my kids "That was a great video"..
Thanks for this I've been needing a flashlight good to know this
Did you find a good flashlight?
@@Hoonigan82 Not yet
Great explanations!
Great explanation and amazing animations/footage.
How is this channel so small and yet has such production value?!
if Candela is for distance, what about Lux? Isn't that what Lux is for?
Plz review on handheld 12v spotlights
Thank u
Question: at what point lumens - candela exceed our ability to see? 20/20 vision. Assuming a 1000 Lumens throw equal candela are we able to see clearly or it does not matter? ( I manage to confuse the question, I think you would know)
Thank you.
what is the best option in lumens for a video projector please?
Very helpful. Thankyou
awesome thank you
Are any of these units actually scientific standards? Like a real conversion number?
I understand lumen and lux but not a candela 😞. Anyway, can I use smartpone's light sensor to measure my flashlights lux count? All I do is putting my phone 10 meters from my flashlight?🤔
Excellent breakdown of the info
i want to buy a led headlight so what should the lux be?
Can a XHP50,2 20W 3,7V 4000MAH FLASHLIGHT PRODUCE 4000 LUMENS ?
Great job Taylor!!! -Alfy
@@kchilites hola tienes para jeep j53 cuáles me escondas quiero led atolladero
A metric you can use is candela per lumen ratio. You see that one light has 50,000 candela and the other has 10,000, but they both have 5,000 lumens. I'm sure a high quality lighting company like KC Hilites lists the candela of every light along with lumens, right? More candela for the same lumens is a spot, and fewer is a flood. Lux tells you nothing. Candela is lumen per steradian, or degree of an arc. This is also know as throw. The longest throw flashlight in the world right now puts out about 700 lumen, like a 2 C-cell flashlight, but it has a candela rating of over ten million candela and can throw over 3 and a half miles. Lumens tell you how many photons and candela tells you how tightly they are packed. You need both.
How are candelas measured? Polarized lens?
You from Kansas city?
Good info!
Helpful, kind of, but I still wouldn’t know which light to buy.
Good video.
Seems strange then that we use Lumens and even Candela for flashlight ratings. Isn't Lux more helpful? Candela makes sense when a lot of light is being produced over a huge area in all directions - you wanna know how much is getting on your book vs. the back wall. Lumens makes sense from a manufacturing standpoint. But shouldn't we all care about more about Lux for flashlights? (very specifically speaking about flashlights).
Good video
good info
Can you tell me if item #92192 fits on 2020 Toyota 4Runner TRD Pro?
KC HiLiTES excellent. This may not be your field per say but I’m looking to lift a TRD Pro. Rough Country said they don’t supply kits for a TRD Pro. Can you point me in the right direction? Maybe a company KC is affiliated with?
@@FrenchHawk878 Check out Toytec. They have lots of options and can talk you through what you want over the phone.
In case of a laser
Aren't lux and lumens the same?
Normalize volume between content and cutscenes.
ile to kosztuje? :D
2:30 except house power is a measure of pounds/foot/second not a measure of speed
No tienen traductor en español
Lux is the best
still doesn't tell me how bad I'm getting ripped of buying these Garage LED lights .
Lumen = Amount of light.......
How did I come to this conclusion when I was drunk
still dont understand candela :/
@@kchilites that would be awesome
Oh, this is about vehicle! I am using common light that we can get from the light section anywhere in the world.
No wonder why I was wondering this guy is trying to con me, 10 meters is too far, I am not seeing anything in 1 meter2 ! Hahahaha!
😪
Candela made no sense seeing that car lights are made to shine in one basic direction. Anytime you measure Light it's in one direction.
Not quite