Digital Photography 1 on 1: Episode 59: Inverse Square Law: Adorama Photography TV

[james07jamesjames]

Pause at 1:55. :D

[iFloridaAllStar]

Love this! Thanks

[stotion]

Thanks for this episode. I appreciate the time you take to make it. It was especially helpful to see the example of the amount of fall-off variation when you get farther away from the light source.

[global001]

Subscribed! Thought I already had so surprised it showed that I wasn't. You're videos are so informative and educational. You're a brilliant teacher too. Thanks you so much for help in the past.

[altitudealchemy]

Great video! I have run into this problem before and couldn't figure it out, now it makes perfect sense. Thanks!

[hakam28]

that was wonderful i watched all your video



[ssthsu]

MARK THE BEST

[mcmillanqld]

Mark, They don't pay you enough. SMac from Australia.

[76ers]

How come all the different models you bring in are called "Sam"?

[76ers]

Now why can't all school teachers be as good at teaching? No student would fail Math or Physics.

After watching this, even a caveman can clearly understand it and teach it to another caveman. Great Job Mark!!

[martinatierney]

That was incredibly helpful... thank you!

[aluxious]

It's the first time i heard of such a law in photography. Good stuff. Subscribed!

[bothulicious]

thanx fo the lesson

[kauxkaux]

On of the best chapters EVER!!!!!!!!!!!!!!

[kauxkaux]

Now I understand whya distant light source is softer!!!!!

NICE!!!!

[effyleven]

That's a FOOT! [8:28] Ha! You gotta be kidding me!

[MyWuffi]

Great tut.

You only forgot to mention what this means in "stops". 1/4 of light is 2 stops.

[effyleven]

@MyWuffi Yeah... also forgot to tell us how far to move a light to get just ONE stop drop-off in light. That's more useful.

[PachulizPunk]

Great video Mark !! Thanks.

[oscarmas]

Excellent presentation of both the theory and practice. Great job.

[pauteno1234]

great video

[TheShpunken]

when he moves the white board along the marks it looks to me like the house lights are on , that test would only be fair if your key light was the only light source. I.E the house lights will become more and more of a factor the further you get from your key light giving you a more consistant exposure. Im not arguing the math just the conditions of the test.

[LightSubscriber]

@TheShpunken he shot the photos at the max shutter speed of 250 killing the ambient light.

[TheShpunken]

@LightSubscriber I see, i'm a camera operator by trade so we were taught the math at college but photography is a different animal. Shutter speed is not a factor with video, its set to 50 (uk) and just left. Its interesting how the shutter can kill light like that. Im getting into photography because i think there is more demand for it so his videos are a god send. Im just getting to grips with this stuff so please excuse my ignorance.

[m505xl]

@TheShpunken I was thinking the same thing. I'm glad you posted this. It wouldn't be so much of a problem near the flash, but at 8ft and beyond the effect of ambient light was clearly there.

I really like this type of video that is more scientific.

[JAHnoOtoko]

Guys, this was a great video, but you definitely need to clean your studio :)

I really like it that we are getting into more advance topics, I started with you from episode one and I feel like I am really learning and progressing with your videos.

Thanks Adorama people!

[zrsgamboa]

Mark, I've seen you use both a Canon and Nikon cameras. Which one do you personally prefer?

[ddnn3]

@zrsgamboa I'm pretty sure he's a Canon guy.

[ny1fanta]

"Digital photography One on One" should have 2 episodes per week =]

[emendoncabr]

@ny1fanta I agree.

[rodrigote]

Excellent explanation!

[mjohn196]

Great 1... Thanks,

[nate42nd]

Does this law still apply in space? Anyone know. If so I don't think we would see many stars. Just wondering if it has to do with earths atmosphere.

[kauxkaux]

@nate42nd Do you have an idea of what happens inside the stars? Is not that surprising we can see them :)

[Shava1297]

Mark, how did you get the Black background on Sam?

[jzantana]

@Claggy Thanks for taking the time to reply. I heard that in the video. But, he did not mention at all what settings he did use. Any camera setting would give you a black background? I guess not, therefore, wondering what settings he had at the time. Flash? I saw a flash being used, which unless I was not paying enough attention he did not mention it. I know this is not the point of this video, but helps when you try to understand the whole set up.

[CriminalLiso]

Great video!



[Av3rnus]

That was a Grade A production and explanation. I really didn't expect to learn anything from this, but I learned sooo much! Thanks!

[johandelport]

Great explanation! Thanks a stack Mark for all the great videos.

[jzantana]

Mark, how did you get the BLACK background on the first model shoot? What camera settings did you have in the model shoots. Really useful if you had mentioned it.

[Claggy]

@jzantana He did mention it. The light falloff was so great that it made the background black. Then when he moved further away from the light, the falloff was MUCH less, causing the background to catch more light than before. It also helps that the flash he used was not firing directly at the background.

[ImageOFlove]

Sam does not need light , she is the light herself =)

[CitizenTommy]

Great info and great examples!

[OnTVads]

Wow thats so cool thanks i looove this channel. PD what happen to the first episondes?

[aliasangel2005]

wow, i learn a lot from this video! good job mark!

[jameslcr]

sam is stunning :D

[HuntsmanExotics]

Very helpful episode thanks!

[RobyllPhotos]

THIS will totally change my way of lighting my subjects and planning my lighting setups THANK YOU sooooooo much :D

[thanamentos]

no worries mark.. subscribed :P

[holmes223b]

Great explanation. Thanks!

[aveiga48]

Great video, great explanation. A+++

[TangoJulietPhoto]

Like Shlomki, I would have liked to know your exposure settings, but still a very, very well done explanation of the Inverse Square Law. Thank you.

TJ

[Jarold82]

tanks mark! I can't wait for the next episode...

[AlexakaAlpine]

Thanks for another great episode

[shlomki]

great episode, mark!

as a side note, i would have liked to hear more about the exposure settings you used in your camera during the video. i found myself asking "wait, is he on manual mode now? is he on spot metering? evaluative metering? how much did he set the strobe power to?"

etc.

thanks for your awesome work!

[LightSubscriber]

@shlomki i would guess he has the camera set to manual. Shutter speed set to 250 so the ambient light is not a factor. and the fstop set from a flash meter reading. As for strobe power i dont know.

[flowtime07]

@LightSubscriber When he metered did he point the sphere towards the light or towards the camera?

[LightSubscriber]

@flowtime07 you should point the sphere towards the light

[LightSubscriber]

@flowtime07 point the sphere towards the light. You can find video's on Sekonic channel with tips.

[1990anshuman]

he thanks mark ur videos r always very useful....

n as usual dis video is also having very useful information......

[johannes914]

Very helpfull episode ...

[567turd]

Thanks mark!! This was a great video!! I'm good with the camera but bad with the lighting... Haha!! This will be super helpful as I try to learn lighting techniques. Thanks again!