The Science of Exposure and Metering
Вставка
- Опубліковано 27 чер 2024
- This Filmmaker IQ course is proudly sponsored by Northeast Community College, whose Media Arts program offers degree concentrations in Audio Recording, Broadcasting, and Digital Cinema. Please check out their program by following the link: northeast.edu/media-arts/
Help this channel by becoming a patron on Patreon! / filmmakeriq
Let's go deep beyond the exposure triangle and look at the pathway which light travels from the scene to the sensor. In this course we will examine the elements of scene illuminance and luminance, various lens modifications which affect exposure, the exposure itself in terms of aperture and shutter speed, the sensor sensitivity, and lastly how cameras and light meters put all this information back together to obtain the proper exposure.
Full Filmmaker IQ Course with Quiz and Sauce:
filmmakeriq.com/courses/scien...
**ERRATA -
There are 10.76 lux per footcandle, not the other way around. I got them flipped because I was thinking there are about 10 square feet in a square meter.
I spelled Optical wrong at 12:00 though if my petition with Webster's is granted, it may just be the proper way to spell it in the coming years.
When I see a new Filmmaker IQ video I drop everything else I'm doing and watch, no regrets!
Same here !...
Rational Raven hmm
Get the thinking cap on and the notebook and time to learn from the best of the best...
Same here
When i hear hi, i'm John Hess, i'm opening my notebook and ready for lesson, thank you so much this is my fav class
sometimes people tends to forget that photography literally means graphy of photons.
even some people gets angry when you call a photograph picture, they say photographs are not pictures (:
fortunately they are so wrong, a photograph is a "type of picture" which uses photons as paint, lens as brush and camera (its sensor) as canvas.
long, extremely detailed, mathematical equations. I loved it! exactly what I needed. thank you! don't change, you're a asset to youtube.
The most informative UA-cam video I've seen so far about lighting science.
Anyone else just keep coming back to this video once in a while? This is my fourth time.
Third, at least.
Third. Extremely helpful for a reference point
3rd also for me. Plenty of information
I usually get Back here to refresh my knowledge. This is info is the key 🔑 to a camera operator. Thanks for this video.
Me
This is overwhelming but awesome explanation, all the way through!
Aspire Studios so true!
You sir are the best filmmaking resource on UA-cam. You deserve some kind of award. This is a serious education you’re providing so many of us. Thank you.
Being a cameraman of 10years, I totally just learned something new. Can’t wait for more nerdy videos like this. Dynamic range and more formulas please!
I feel like I've learned almost everything about exposure thanks yours video. The most scientific channel on UA-cam which is about Filmmaking
I am one of those who watched a lot of videos on exposure (and cinema and video related stuff) and yours is more complete, deeper, precise and comprehensive than the average as always. Thank you for you work. It's gold!
I don’t get why these videos get so little views in relation to subscribers....they are very well done and articulate, makes the majority of the info easily digestible. Hey, John Hess. Why haven’t you pitched a history of film show to any tv studios? This would be perfect for the history channel or something similar....keep up the great work, you’ve gained a loyal subscriber.
Since online videos became more popular and UA-cam gives the creator more freedom than TV studios, it would be unnecessary for Filmmaker IQ. I guess these videos only get less views than other filmmaking videos because of the length and the detailed explanation are a smaller niche in the filmmaking niche .
It's because he says "make something great" at the end of each video. The UA-cam algorithm thinks it's a Trump video and throttles the traffic.
I just watched all your episodes and now I am searching whole internet to find quality content about filmmaking just like yours :D
mad respect to someone who ridicules themselves in their video.
Pre-emptive strike!
You're a great teacher.
Thank you for your support!!
Thank You, and those who help you. You teach things I know from a different background, (I have an engineering background) and the way you explain concepts is excellent. It has improved my understanding greatly. (your audio videos especially)
He is Modern Einstein
i'm so glad i found this video. i've watched a dozen others that repeat the same basic info over and over and leave out key details as though they are some secrets of photography purposely kept hidden. this was incredibly helpful. thank you!!!
Very well done as always. I learned a long time ago that the most important tool for a photographer, next to the camera itself, is a good light meter. You can ensure the scene is ideal before the camera even arrives.
This is the best video I have seen about this on UA-cam. All the other ones that I have personally come across are always giving you half of the explanation. This has the whole enchilada. Thank you so much for this. It messed with my brain a bit but after not stressing myself out so much, it clicked. You rock.
Another high quality video as usual!
WOW, I never understood all the science behind Exposure until I watched your video. You have an amazing way of breaking it down and using excellent graphics images to be able to understand the material. You Rock! Thank you for putting this information out there.
John, you are such a pro when it comes to creating amazing instructional content. I love all of your content!
@0:15 - Proudly Sponsored by Northeast Community College
@0:25 - Intro
@0:39 - What is Exposure?
@3:24 - The Light in the Scene
a. @4:01 - Intensity
b. @5:16 - Illuminance
c. @6:29 - Lux
d. @7:27 - Inverse Square Law
e. @8:26 - Luminance
f. @9:31 - Recap
@10:55 - Lens Modification
@13:53 - The Exposure
a. @15:47 - Exposure Value System (EVS)
@19:03 - The Sensitivity
@22:33 - Putting it all together and Spot Metering
@26:30 - The Zone System
@28:58 - Incidence Metering
@31:21 - Closing
THANK YOU
You’re the best man. It’s great to find explanations that are both in depth technical AND practical in terms of usage.
As a guy who is finally making some photos that I can live with, I am trying to dip my toe in video. 180 degree shutter seemed like just another random piece of terminology to remember (as random as f/stop), thank you for explaining why the term is used. With how video is exposed it makes total sense. The rest of the video is great too, but this feels like it has taken a load off my mind :)
Yes, I know a great deal about exposure already, but I wanted to watch because you are such a great teacher with such an enormous wealth of information, that no matter how much I know, I always learn more from you, thanks for sharing your gift for teaching.
Woooooooo! Another superfluously informative course, John. You da man! 👍🏼
This is valuable, 100% free information guys. People pay good money for this stuff. And here it is...a mountain of knowledge, literally at our fingertips. What a time to be alive!
Excellent video as always, guys! Looking forward to the next live show!
I'm currently studying as a cinematographer, and this video was very insightful. Thank you.
Amazing information man. Please keep uploading videos, you deserve a much bigger audience than what you have!
This is one of the best resources I've come across! Thank you very much for your hard work!
When science and math are being broken down in pieces, I really like this world!!! Thank you so much!!!
thank you so much. this is the most complete explanation of exposure science that you can find in the internet. like for real! and you a great teacher!
I only have one word for this video which is the first ever I watched out of the channel as seen on FStoppers and that word is G R E A T ! ! ! Thank you so much, you present it all in a very simple way which adds to the already great content.
GRAZIE
You're literally a plethora of knowledge. Thanks for sharing with us!
this video was so beautiful to watch, enjoyed every second of it.
Very helpful especially with newer digital artists and filmmakers working with virtual and CG based production. Thank you!
You guys make really great and unique videos that aren't like any other UA-camrs. Keep up the good work!
Thank you!
These kind of deep dives are exactly what I’m looking for. Got driven here by the new dual iso video you posted. Can’t wait to catch back up to that vid. Thanks!!
Highly informative and very in depth. Thanks for the work and effort!
Thank you for taking the time for putting this together
This is the kind of Filmmaker IQ video that got me to subscribe in the first place. Great stuff.
These videos are so great. I mean I could say a bunch of really hyperbolic things, but they're just really wonderfully interesting and high quality learning material.
Truly grateful for content like this.
Es tan agradable el ver estos videos, puedo dejar todo de lado sólo para escuchar y ver esta clase magistral, gracias por compartir
those productions are amazing , thank you !
i love the wilhelm scream in the intro
I always learn something new with you. Thanks
please do a video on dynamic range. thanks
It's between that and lighting ratios for the next big "tech" one.
By far my favorite video.
Excellent way of teaching, great knowledge....I have become fan of you. Thank you for the knowledge.
Very informative and very technical but I learned and understood a lot.
In the category of UA-cam exposure video, the winner is Filmaker IQ.
Greatly done!
So informative!
🙏🏻
As a Producer who is learning to become more a Director of Photography - lighting has always been one of those skills I just haven't nailed down, especially when talking to more experienced tech-centric DP's. This definitely helps make those connections to make the art-to-science translation.
Thank you for the masterclass!
Wow! Love this explanation. Well done!
Great content! Thank you for bringing us the knowledge :)
A superb tutorial.
Beautiful video. Makes me glad I'm a nerd. Looking forward to more of these!
Amazing lesson, thank you so much!
John, your videos are pretty unappealing at first sight (in the context of youtube) but there's really so much in them, not only knowledge but also hilarious stuff, like the opening line about "exposure".
When i first found it abt 3 years ago, your channel was more of a thing i watched to learn and supplement my studies, but it is now one of the only essay-type things i watch and enjoy paying full attention to, when i want more than a white noise podcast,
When I took my Lighting module exams (Engineering, some times ago now) I remember the level of nerves that I experience on my ‘nervous-degree scale’ for this module as being pretty damn high. I just didn’t get it and shamefully only just scraped in on this module, I was just relieved at the time but still didn’t get it. Now, had the whole thing, module, been taught in the manner you have here my ‘nervous degree scale’ reading would likely have been much lower and i’d have walked into that exam with the ‘got this ..’ swagger and probably have put the pen down before time was called ‘hey who knows’. As a photographer this stuff is much more relevant to me and understanding it that bit more important. So i’d like to say thanks, because you’ve just pulled the lever and got three bells in a line and i’m winning!! Well, kind of. I’m learning studio lighting and you’ve helped me to dramatically clear some fog. Double thanks.
Finally understood what ISO actually is. Thank you for your efforts in explaining these concepts!
Fantastic video, so educational.
They’re back. We missed you!
Thanks a lot man. Very helpful. Don't have to eyeball it so much anymore.
Nicely explained. Thanks!
That was a fast 30 mins!
Awesome presentation!
This is outstanding! Subbed!❤️👍
Great as usual! Thanks
Beautifully explained.For some non science students it may be long and complicated. Thanks for such a detailed video👌💐
John you are the boss excelent video on the topic
Absolutely well made video!!!
Brilliant stuff!
Thanks this was a great explanation of the topic
Thanks a lot, your informations are excellent as always.
Very good, sir! Bravo!
John's not only the best technical film school on UA-cam, but he's also super cool in real life
Thank you! Your check's in the mail
@@FilmmakerIQ ha, didn't think you'd respond so quickly. Good to hear you're active, John!
This is a fantastic video. 👍👍👍👍
Awesome topic!!
Thanks a lot. Really high quality content.
tuyệt vời. một bài giảng rất bổ ích cho những ai quan tâm môn học về kỹ thuật ánh sáng, phơi sáng, đo sáng....
thank you very much for this video!
*1- Why are we watching this if we already know it?*
Cause you are awesome and deserve views. :)
*2- The Exposure Triangle*
The exposure triangle explanation isn't perfect but it's a good starting point for explaining to someone who doesn't understand exposure at all.
Why are my pictures blurry?
Why are my pictures all grainy?
Why is my picture so dark?
All of those can be answered with the basic explanation of the exposure triangle.
The problem with the exposure triangle is the ISO portion is become increasingly complicated by ISO-less sensors. It also suggests an equivalence between the "real exposure" (shutter speed and aperture) and ISO when there isn't one (this is a source of A LOT of debate in Photog circles) The triangle also misses two key components: Scene illumination and Lens Modification.
After a reading everything I've seen, I think the triangle is really kind of a bad way to look at it. It doesn't really make any sense if you think about it deeply and there's no way to represent it graphically that's accurate.
The pathway of light however - is a real model of how light behaves in a camera.
Wow Wow Wow - thx for that explanation & work! Greetings from Vienna/Austria - and always everytime a good very good Englisch exercise ;-)
I wish that course on lighting would've come out someday, it would have been so interesting with your approach.
What would you like to have covered?
@@FilmmakerIQ here are a few ideas:
- The history of Lighting in the movies: from the greenhouse-like studios of Meliès to to the usage of tungsten, fluorescent lights, HMIs and LEDs nowadays. There’s already a ton of room on this topic alone I think just showcasing the requirements of the cameras of the times, the pros and the cons of each generation of lighting technologies.
- The history of lighting styles throughout the ages of film, with probably just as much to say as previously with each era showcasing great use and ingenuity (each decade I think has a signature lighting style but the film noir era namely is probably an iconic style of lighting but even soap operas have great lighting for their purpose and became quite iconic too).
I think I could go on if you wanted but it’s already listing an immense work to accomplish lol. Anyways I just thought of that this morning as I told my filmmakers student about the invaluable ressources they can find on your channel before showing parts of this video to give them the best explanation there is around (imo) on lighting units. :)
Great class...
Job well done!!😍😍
Knowledge!
MASTER!
Awesome, thanks!
This is like actually being in class. Watching other UA-camrs, they may tell you what works for them but never give you a detailed why. This answers those questions to understand the concept behind WHY exposure works the way it does. I love it, I'm subbed and delving into more of your videos!
Love you John Hess!
Excellent. That is all.
thank you
John Hess is one serious geek. Top man.
Great knowledge and good teaching style Friend.I like your teaching style.this is Azlan Arain khan cinematographer and Director.From Bollywood.Cinemai in India.
I’m still a little lost with a lot of the technical stuff and math, but I do feel as though I have a better understanding of how all of this works in general
I love this channel I just know that I have to get Pen and Paper because I will learn a shit ton of stuff no mater how much I think I already know about the topic