Mind Blown!!! After watching your video, I grab couple of still pictures from David Fincher's movie and check with false color. I noticed he like to put the 1:3 ratio to main character and 1:2 ratio to other people. Thank you!
5 лет назад+8
This is SO WRONG. 100 IRE IS NOT 1 STOP ABOVE 50 IRE. Stops in IRE are every 20 IRE. Mid grey is 55IRE and one stop above that is 75IRE, 2 stops is 95IRE. If you know the ZONES system (sensitometry) then: from 0.7 to 20 IRE is ZONE III, 20-40 ZONE IV, 40-60 ZONE V (mid grey, correct exposure), 60-80 ZONE VI, 80-100 ZONE VIII. Each Zone one stop of light
How do you universally arive at 20 IRE? I thought it would differ from camera to camera. Eg, a 5D compared to an Alexa will have very different available dynamic range.
Brilliantly explained. Recently started learning colour correction/grading and nowhere had using false colurs been recommended. But I'l definitely be using it now., so time to analyse some shots. Now where are the Luc Besson directed screengrabs.
Great video LPTG! I use this technique often. I do want to add though that your way of expressing light ratios is common, but also commonly incorrect. You can reference the ASC Cinematography Manual for the exact calculations - but light ratios are logarithmic. An example would be a three stop difference is actually an 8:1 lighting ratio. If your memory is good you can just remember it like this: 1 stop difference 2:1, 2 stop difference 4:1, 3 stop difference 8:1... and so on. It gets much more complicated when you start dealing with fractions of a stop. Anyways - please take no offence to my comment, just trying to spread the word when it comes to a large misunderstanding about ratios. Love your channel & content!
Hey Greg, great video but I'm a bit confused about reading in stops. If 100 IRE is 1 stop over from 50 IRE. Increasing a the key light on a properly exposed 18% grey by 1 stop would render it pure white, sounds a bit off :0 Let me know if I have misunderstood something, thanks so much!
This is literally just content ripped from Wandering DP's article. So many parts are word-for-word, the presentation, the order of topics. At least give the guy credit for his hard work.
Hello Greg! What if there are fractional numbers? How would you handle a case, where you have your Face IRE 40, and 35 IRE for the BACKGROUND? How does it look like IN STOPS? I would say, divide 35/40 -> 0,875. What would you tell to your gaffer? I just would say multiply both with 10 and say 8.75 ~=9 --> that's a 9:10 stops ratio? (So you don't have to freak the gaffer out with a fraction, and you were quite accurate, too....) Or in a case like that, you just go for a LIGHT LEVEL ratio of 11:10? Or am I totally wrong? (I totally get the logic, but as I'm planning an experiment with False Color to my own channel, I want to make sure, not to publish any misleading content. :)) Thanks in advance for your help + for your totally helpful channel & content! :) (If I will talk about the ratios, I promise you to refer to your channel and put your link into my episode + description.)
Maybe that was a bad example, not a typical goal to have 5 IRE less value for the background, but I guess you get what I'm talking about. :) Thanks & Cheers: Ben
I am not expert, but how properly exposed (50 IRE) doubled, becomes (1 stop over, 100 IRE) blow out, because this is what red in false colors are. Can you explain?
Do you need to use same lights so to have correct light strengths for percentages...and i tried using false color subject was correctly exposed on face but back ground was too underexposed on vlogL...
everything is correct, except the way you call the contrast ratio proportion. 1 stop is 2:1, 2 stops 4:1, 3 stops 8:1... for example 3:1 it doesn't means 3 stops but 1/2 stop... A bit of confusion, but the IRE theory is correct. Cheers
Mind Blown!!! After watching your video, I grab couple of still pictures from David Fincher's movie and check with false color. I noticed he like to put the 1:3 ratio to main character and 1:2 ratio to other people. Thank you!
This is SO WRONG. 100 IRE IS NOT 1 STOP ABOVE 50 IRE. Stops in IRE are every 20 IRE. Mid grey is 55IRE and one stop above that is 75IRE, 2 stops is 95IRE. If you know the ZONES system (sensitometry) then: from 0.7 to 20 IRE is ZONE III, 20-40 ZONE IV, 40-60 ZONE V (mid grey, correct exposure), 60-80 ZONE VI, 80-100 ZONE VIII. Each Zone one stop of light
How do you universally arive at 20 IRE? I thought it would differ from camera to camera. Eg, a 5D compared to an Alexa will have very different available dynamic range.
wait, what ? how do you know how many stop the ire represent without hard test on camera ?
Brilliantly explained. Recently started learning colour correction/grading and nowhere had using false colurs been recommended. But I'l definitely be using it now., so time to analyse some shots. Now where are the Luc Besson directed screengrabs.
GREAT series!!! When is Part 3 coming out...?
Great video LPTG! I use this technique often. I do want to add though that your way of expressing light ratios is common, but also commonly incorrect. You can reference the ASC Cinematography Manual for the exact calculations - but light ratios are logarithmic. An example would be a three stop difference is actually an 8:1 lighting ratio. If your memory is good you can just remember it like this: 1 stop difference 2:1, 2 stop difference 4:1, 3 stop difference 8:1... and so on. It gets much more complicated when you start dealing with fractions of a stop. Anyways - please take no offence to my comment, just trying to spread the word when it comes to a large misunderstanding about ratios. Love your channel & content!
That's what I was thinking! A two stop difference is a 4:1 ratio.
so would 4 stops be 16:1?
@@imcrimson8618 Yes - correct! Each stop doubles the ratio number.
@@dalesood Great! I Understand it :D
Where's Part 1? Can't seem to find it on your RUclips site.
Perfect work! thank you so much!! when you will release the part 3? I can't wait!
Hey Greg, great video but I'm a bit confused about reading in stops. If 100 IRE is 1 stop over from 50 IRE. Increasing a the key light on a properly exposed 18% grey by 1 stop would render it pure white, sounds a bit off :0 Let me know if I have misunderstood something, thanks so much!
exactly what I thought. @lensprotogo can you make sense to this?
There is mistake with explenation of ratios. And i's big mistake for that kind of video.
This is literally just content ripped from Wandering DP's article. So many parts are word-for-word, the presentation, the order of topics. At least give the guy credit for his hard work.
Exceptional tutorial clear and concise, looking forward to part 3
Jeahh.. that was so simple on to the point! Thanks!
Hello Greg! What if there are fractional numbers? How would you handle a case, where you have your Face IRE 40, and 35 IRE for the BACKGROUND? How does it look like IN STOPS? I would say, divide 35/40 -> 0,875. What would you tell to your gaffer? I just would say multiply both with 10 and say 8.75 ~=9 --> that's a 9:10 stops ratio? (So you don't have to freak the gaffer out with a fraction, and you were quite accurate, too....) Or in a case like that, you just go for a LIGHT LEVEL ratio of 11:10? Or am I totally wrong? (I totally get the logic, but as I'm planning an experiment with False Color to my own channel, I want to make sure, not to publish any misleading content. :)) Thanks in advance for your help + for your totally helpful channel & content! :) (If I will talk about the ratios, I promise you to refer to your channel and put your link into my episode + description.)
Maybe that was a bad example, not a typical goal to have 5 IRE less value for the background, but I guess you get what I'm talking about. :) Thanks & Cheers: Ben
I am not expert, but how properly exposed (50 IRE) doubled, becomes (1 stop over, 100 IRE) blow out, because this is what red in false colors are.
Can you explain?
Really, really great explanation. Thanks so much for these tutorials!
Would love to see Part 3 ETA?
Do you need to use same lights so to have correct light strengths for percentages...and i tried using false color subject was correctly exposed on face but back ground was too underexposed on vlogL...
I'm not quite sure your question but you can mix lights they don't all need to be the same source.
so so good... the clearest explanation I have found so far!
and wrong unfortunately :(
I agree, this rocks so hard. This channel feels like a fast track to knowledge!
when will the third part get released?? waiting
how to judge exposure over one stop or under 2stops by false color like the dslr‘s lightmeter
in cinematography 2 stop light difference means a 4:1 ratio
(Cough) Wandering DP (cough). Well done if you arrived at this technique yourself, but some attribution would be nice if you didn't.
I was thinking the same
Yeah, it is it flu season? I was coughing the same thing :D
Cough cough, i had coughed the same thing too
Man Greg your a very intelligent cinematographer!
simply brilliant....... well explained
thanks for the value
hey, part 3
The ratio explanatiok was great thx!!!
waiting for the third n important part of this series
Thank you so much!!!
Great video. :-) i am really starting to like false color. :-)
everything is correct, except the way you call the contrast ratio proportion. 1 stop is 2:1, 2 stops 4:1, 3 stops 8:1... for example 3:1 it doesn't means 3 stops but 1/2 stop... A bit of confusion, but the IRE theory is correct. Cheers
upload part 3 as soon as u can
Helpful! Thank you!
wow, pure magic!!
THANK YOU!~!~~~~
Part 3 ruclips.net/video/NHnRwR76E6Y/видео.html
Part 1 ruclips.net/video/vmLVlZwpOSM/видео.html
Oh
Mind = Blown!
Man that plugin is costing a lot more nowadays!
This is so WRONG!!! if you have a 3:1 doesnt mean 3 stops