Never heard a clearer and concise explanation of the inverse square law about light. Karl, YOU NAILED IT

one and a half minutes and everyone got it, no bs, no math, just simples. GREAT!

Karl's teaching is timeless and applicable for all photographers 8 years ago, today, and into the future! Physics do not change! :)

This was a really clear demonstration of some of the effects of increasing the distance to the lightsource, decreased intensity, fall off and softness of light.

An other Karl's master piece explanation!

Brilliantly clear teaching of a complex lesson!

im not dumb. really im not. ive been shooting photos for a long long time. probably before Karl started out (6th yearbook in '76) but this is one of the hardest things for me to remember. i try and i try but i dont know what it is. this was very clearly done. THANK YOU Karl! off to pt 2!

I really enjoy these quick 5-7min tips! Fantastic!

thank you Karl Taylor! You always makes things easy to understand for me!

Thank you for the simple and easy to understand tutorial, Karl Taylor!

Damn Karl! Your the man. Thank you for this clean and concise explanation.

Awesome job of explaining and demonstrating that. Makes perfect sense!

That is the simplest I have ever heard or seen that explained..good job

VERY insightful. Very well demonstrated as well. Great stuff. Thanks for sharing.

Hi Karl. You succeeded in explaining the ISL so well and simply that even I could understand it! Thanks for all the great content you and your team have produced.

Very simple, Very useful. Thank you.

I truly love your explanation. Very simple yet direct to the point. Thank you.

Magical! Thank you for doing this quite simple explanation.

Yet another great tip Karl, keep them coming.

Great vid and simple explanation! Thanks Karl!

so easily explained, thanks for that!

Karl, do not worry, good things always come in small packages, thank you for this video from the inverse square law, always read books and web about this law, but I assure you that this is the most simpe and better explanation ...

Karl, thanks for this upload..... it was very informative... cant wait for part 2.

Very interesting ! thank's for sharing your work!

Simple explanation no frills but I can understand it. Thanks *****

thanks for the vid, nice quick lesson

thank you Karl sir! really helpful as always. Just curious,is the Fashionscape video dvd out?ing

Good info, thanx Karl!!

Just like the sun. Good stuff.

Great vid! Very informative.

Love it , waiting Part 2

Thank you Karl.

Man I love your tutorials, y can't imagine how much I suffered because of this my main problem was when I use black backdrop I makeup photography it never comes really black, after million try and error I found that if I move the light close to the model face I will need less light to probably exposes her face so the background will be fully black.

Very interesting and helpful video. How was the exposure adjusted I did not see any meter being used.

LOL You made her take her heels off :-) Too funny! Good video. I see many beginners that put their subjects too close to the background which will make your shadows much harsher. Do a video of the different lighting ratios like 2:1, 3:1 ect. that would be a good learning video for new photographers starting to shoot portraits. Love the videos Karl.

awesome video!

excellent as usual

Thank you Karl:)

Very good thanks

Another great video, thanks for sharing and helping out us mere mortals :-)

You are awesome dude.

You're stuff is always amazing - did you ever thing of doing podcast?

Thanks Karl

good stuff!

Thanks for the explanation Karl... but I have a Question, I hope you could answer it for me, (this doubt is because I might not want to change my settings in my camera (ISO 100, F11, 1/100 (this is just an example)). You explained that with the source close to both of you, the fall of light is very harsh on you and your model is well exposed, and if the source of light is far away from both of you guys you are well exposed, but what happens if my source of light is far, and I increase de power of it? (to keep my settings) the final result would be the same if I have the source closer but with less intensity? or it only depends on the distance?

Love the way you just go and prove it! xD

Hi Karl, you are obviously right in what you are saying here in the video but as well as the relative distances becoming more similar as you move the light away the model obscures the light from you less also contributing to your better illumination. When do you move studios BTW?

Thank you ! ;)

jajajaja great picture @3:44, thx for sharing all that knowledge...

Very nice video, so if you move your light further away to get a correct exposure for a group shot how do you deal with the hardness of light? "Further the light the harder it gets" I know this scenario is a bit extreme and you wanted to show or prove a point so you positioned the light in a 45 degree angle and you could probably position it more straight on and don't have to back away so much to get both objects lit the same, but how about feathering the light "point the light at distant person and measure the light on the closest person?" Would this do the trick and don't need to back away 10mts?

With you I find out new things

Nicely explained that. This at the new studio Karl? looks a tad smaller, could be wrong

Additional Info: The shadows on the face in the near light position are smoother than the shadows of the most far position. Here they are more sharpend.

how important it is to have a high roof studio? is it better to a normal room roof?

Physics, visualised.

Good video, camera click sound effect way too loud.

no offense but could u do one where u use math to calculate the required distance (for macro)

Actually, this is not a demonstration of the inverse square law, per se. The difference in light between the two subjects, as depicted, will decrease as the light is moved away no matter how the power of the light falls off with distance. Very useful information and demonstration but not necessarily having anything to do with ISL behavior.

its interesting to think this is how the real world looks, but because our eyes automatically adjust you wouldn't notice.

Whats the point in using something like a fill light then? could you not just use 1 light and move it really far back?

That is why it is better to use natural Sun light!

Great video. Sophie was still taller than you without her shoes on though.

I wonder where is fabian, and how is she doing? I believe she is not working with you anymore right?

Fim = Fabienne + Tim

Holy Shit! BJ Penn does photography now.

She still is hotter than the short guy.