The Simple Math of Correct Exposure
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- เผยแพร่เมื่อ 2 ก.ค. 2012
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Are your photos too light? Or too dark? Maybe you need a little lesson about exposure! Check out this lesson for your introduction.
The playlist for the entire course is available at:
• Introduction to Photog...
Speed up to 1.25X and enjoy!
lol... hahahahahahahaha
SOOOOOO TRUE!
Thank you!!!!
Cyril Tibayungwa you are a genius
Great very genius
1.5x did it for me!
*Why so many dislikes? Dude just explained it perfectly!!*
The analogy of the water, bucket, and time is just perfect, even better than the famous triangle. Thank you!
This is probably the best lesson online! I've watched many of this kind and this one does a good job explaining basics of photography.
This is the SIMPLE MATH of correct exposure?! Holy shit!
Feefye Fofum yeah simple math go back to grade 4 if it's too complicated for you
lame ^
@@newtoncraftmc keyboard warrior.
This is the most comprehensive and simplest explanation of the relationship between the 3 parameters (iso - aperture - shutter speed) - this explanation goes a bit further to explain the concept of stops - which is not done / tackled in other videos - well done
This is the best explanation for manual exposure I’ve ever heard on the internet! Love the analogy to water pipes! 🚿
It’s 8 years old but still gold
The best in-your-face visual/voice instruction videos hands down!!
The actual Math starts at 9:12
Thx
Cheers lol
A precise and simple explanation of a subject most people overcomplicate. Thanks for taking the time to make this video.
It's all relative. It's all in what you want. There is no definitive answer that the beginning photo is under exposed. It may be perfectly exposed for the intended use as a dark background scene. The best photography class is to go out and take thousands of pictures, tens of thousands of pictures, then choose one or two that you think turned out the way you like. Build from there, but keep on shooting.
+Kenneth Nielsen agree 100%!!!!
one picture from ten thousand seems a bit exaggerated. But I agree with the rest you are saying. I think the story or what a picture is saying is more important than correct exposure etc.
I am not sure if I agree, rather I would I understand. I think that exposure is not what you feel is good or not since it can be measured. However, the intention of the photograph(er) is a whole different story..
Good advice, but does not take tens of thousands of pictures.
Well, wanted to write them same until I realized underexposed means blakced out shadows. It's not neccessaily bad, but still underexposed.
Best explanation I seen! Thank you for this. I am trying to learn my Nikon D5100, had it for 4 years and have learned from many, but never really understood, just followed the numbers and took lots of pictures to see the differences, however you helped me visualize exactly what I'm doing now with all these crazy numbers.
This was so informative and easy to follow, the diagrams really helped me put everything together!
I really appreciated this video because although I could go out and mess around with manual mode all day like some of you say and not saying I won't this helps me because being the very visual person I am If I see a shot and decided oh that will look good "underexposed" or "overexposed" I now know how to balance it out to get what I envision or to at least try and most likely get better results.
Terrific tutorial. Clearly laid out and thorough. Thanks!
Really liked the bucket metaphor. I understood the basic concept coming in but that particular metaphor brought it all together.
heres one simple basic guide to help u all... never reduce the shutter speed so as not to blur your pictures due to camera shake etc .. try not to go lower the 1/50 if you can help it.. shoot at average aperture of 5.6 or 4 or lower eg 3.5 or 2.8 if its getting dark (night) and if photo is still dark then bump up the iso till you get a pic you are happy with.. iso 200 or 400 or 800 or 1600 or 3200..keep bumping the iso up.. too high u may get bit grainy but at least u got a decent pic.. in the daytime iso 100 to 800 if needed should take care of most things..tip.. use av mode on camera..play with iso to get good shutter speed and exposure..this is just a basic guide which will improve your pics overnight..Hope it helps..Riz (Moments in time. by riz ali photography)
Good advice Riz!
Doesn’t apply if you’re shooting film
Malik Martin wouldn’t be able to adjust ISO on the fly since your film is presumably fixed but yes, adjust ISO and shutter speed
Regardless editing will fix everything
It's much better to get yourself a monopod/tripod or learn how to hold your camera properly than to risk having grainy/noisy pictures. Long exposure is a really useful technique after all.
You make the best tutorials on TH-cam.
I am downloading them all so I can view
jack002tuber, Hand holding your camera. A simple way you can look at it is: If your lens is at 50mm you will need at least 1/50 shutter speed. 70mm you will need at least 1/70 shutter speed. 100mm = 1/100 and so on. Using VR (Nikon, Vibration reduction) or IS (Canon, Image stabilization) will give you an an extra couple of stops to play with as well. So 100mm you can shoot as slow as 1/25 instead of 1/100. I wont confuse you too much with the difference between cropped and full frame sensors now. But if you are using a cropped sensor (which you probably are)...Multiply those numbers by 1.6 for Canon and 1.5 for Nikon.
So for a micro 4/3 camera, which has 17.3mm in width i have to double the numbers (36 / 17.3 ~ 2) ? For example at 24mm it will be 1/48 minimum?
Finally, a good teacher!
Thanks for your video!
I'm probably being very adolescent here, but am I the only person that giggled at the sight of the pink hose?
Sorry, I just couldn't help myself.
lol I did the same
And this is the comment I've been searching for, I'm not alone 😂
You guys should be ashamed. :)
I was already struggling with the tripod's middle leg.
ha!
THIS! thank you for a great explanation.
It's actually easy once you understand why.
One stop down is half as much light, one stop up is twice as much light. If your more interested in aperture "More or less back ground seen in the photo" higher gives more back ground ie f22 or less f2.0
Shutter priority gives more control over contrast, motion "speed" and time film\sensor is exposed to light. You can fool the camera with EV + - settings as well. This only applies if the area of interest light is metered correctly. One reason light meters are a valuable tool as light comes from different spectrums not values.
He really explained it so well how the three basic elements of photography are related. SUPERB!!!
I respect your digital photography tips on math of correct exposure. so educative!
Regards!
thank you so much for taking the time to explaine this concept to me and the others it was realy simple and clever !!
You are very good at explaining, with great analogy's.
Thanks again.
Great explanation of exposure ! Good example using balanced stool !
This is very helpful!! Thank you so much for this great video!
This is a great tutorial. Easy to understand and follow.
Very helpful! Thank you!! You taught it in a way that makes it easier for me to learn & remember. I look forward to watching more of your videos:) ~Donna
I really appreciate this. Thank you for taking your time to help others.
Great video! One of the best pieces of advice I received on exposure was if the lighting is decent or better, is keep your camera in Auto ISO. Then based on what you're trying to accomplish you can choose to shoot in Aperature or Shutter Priority. This is similar to what you alluded to having to do in the days of Film.
The supposed under-exposure at the beginning is far more interesting than the "correct" exposure. The mystery and moodiness make you look longer at the image in a state of wonder and curiosity. It's an artistic concept called apophasis. It's fucking beautiful.
This is a seriously excellent video tutorial. Thank you.
I would like to thank you for the explanation. I am no Einstein or mathematician but I understood all of it.
Best explanation so far! Thanks dude!
I have watched hundreds of photography videos------yippee-----I finally get it---thank you so very much!!!!!
Forgetting that while all 3 variables controls the exposure they also each have a secondary function and/or trade off. Shutter speed means u either freeze motion or get motion blur, aperture is going to determine your DOF (as well as the focal length of lens) and ISO is going to make image clearer or more grainy. So when setting the exposure you have to sacrifice something. With shutter speed the work around is use a tripod or find a way to stabilize it.
But say if you want to shoot at F1.8 but image is over exposed and you also wanna freeze motion but you also want a clear grain free image, it can't be done unless u have the ability to add loads of lights which is the alternative. Otherwise you're gonna have to sacrifice something. So you may have to increase aperture but you lose the bokeh that you might have wanted or you sacrifice shutter speed and retain that bokeh but you may have a problem with motion blur depending on the subject, or you can sacrifice ISO but will result in a grainy image.
I normally like to control 2 sides of the exposure triangle and let the camera control the 3rd. I usually have it in aperture priority with a manual ISO or manual mode with auto ISO. If it's looking too bright or too dark I use the exposure compensation. If I'm in daylight or on a tripod I will use aperture priority with ISO 100 because in daylight it might choose like 1/200 s or 1/600 s which doesn't really have any effect on what the photo looks like. If I'm using a tripod in low light and the subject is totally static then the shutter speed doesn't affect what the photo looks like. If I'm using it hand held in low light I will set the shutter to the longest I can hold it still for which is usually 1 / 35 mm equivalent focal length, set the desired aperture and let the camera decide the ISO.
You are a Mad Scientist. I thought you were the gentleman on Khan Academy with the drawings & “the” voice😚. I completely enjoyed the teaching with the size of the bucket- ISO, width of the pipe- Aperture, amount of time to dispense light- Shutter Speed, were wonderful Picture Word References 🙏🏾
VERY EASY WAY TO GET INTO THIS, YOU TAUGHT VERY SIMPLE GREAT , GOOD TEACHER ILU
Know it all. Always looking for at good way to explain it to newcomers. You nailed it. Thank you :-)
Fantastic job! I appreciate the time and effort it took to make this clip. Those who condemn this effort are the kind of people who vote for politicians because of excellence in another pursuit, an example would be voting for a retired athlete or because a campaigner wore a nice tie, or because the politician message is a nice catchy phrase. Photograph at its core is not simple, if you want simple stick with your smart phone.
Wait, I don't condemn this effort at all. I learned a lot. And I vote for people who do excel at outside ventures or businesses. Success is what I want in an elected official. Not a career politician. The art of negotiation is first learned in sports, team work or business ventures. I want my official strong enough not to take bribes or lean to another that can fatten them. So, your metaphor in my case doesn't fit. I love the bucket analogy and water flow, I actually think I grasped the principle of photography. And I would prefer quarter back, green beret, or CEO in office. Lets run things like team work, fighting force or a successful business. ; ) Deepest respect.
Detail discussion on exposure considering Aperture,Shutter Speed,& ISO is helpful
in learning Photography. This lesson is required in learning. Very Very Important.Thanks
wow nicely explained.. easy to remember.. Thanks a lot. Great job..
Great job! A simple analogy to understand exposure.
Thanks for the nice explanation.
thank you very much that was no brainer explanation and very straight to the point good job.
This is the greatest analogy I have ever seen.
I like how you explain things. I know a lot of what you've said in this video, but I like how you teach people.
:)
Nice one.
(being English, I wish people would say "maths", but that's by-the-by).
Thanks .Clear explanation.if you add or decrease a stop then do the same to another parameter.
I have another explanation with Algeria
LHS = RHS
keep ISO fixed
Apperture = Shutter speed
Eg
5.6 = 1/500
Decrease by one stop =Increase by one stop
4 = 1/250
And vise versa
When we cannot go beyond F4
Then decrease or increase ISO and Shutter speed.
For eg
We cannot go beyond F4
The to decrease by one stop ISO go for ISO 50 and increase shutter speed by one stop
ISO 50 =SS 1/500
Hope this helps
Awesome explanation, thank you!
Clear explanation, easy to understand.
Very good video and def good points of explanation. Now my question is how do you know when you have "Correct exposure" when introducing a speedlight to your image. For example when I use the stock on camera flash I usually use my exposure meter to determine when I raise or lower a factor being iso, aperture, or shutter speed to compensate for the flash. Also when the flash pops up on my camera it shows that I will be over exposing or under exposing if i use the flash but when I use a speedlight it does not give me the same output. Anyone help please
Is their a video that explains how you know what to set all those on to get the right exposure? For example, if you set the ISO at 400 how do you calculate what to set the f stop and and shutter speed?
I don't know what everyone is going on about. I thought this video was very helpful. I think it really depends on how people learn. For some people it may be beneficial to break it down through simple metaphors. I do wish there was a little more time spent on the math, but it's a fairly simple concept in the first place (meaning there's really not much to be said about it...in my opinion.)
Thanks for the video ;) I love the analogies
you can also throw in exposure compensation as well
Exposure comp works only in auto
love this needed this
Thank You this has helped me very much!!!
Nicely done!
Excellent explanation.
very good example of basic photography.
Great explanation !
Sir I learn so much from you thankyou
Great video. What program do you use to draw on the screen like that?
You’ve provided a great explanation on how to *adjust* the exposure triangle. But how do you *establish* the exposure triangle to begin with? Meaning, how do you know which shutter speed, iso, and aperture is proper to start?
Depending on your camera, you can just search the standard settings for starters. But it varies depending who you ask, and what type of photography you like to, such as portrait, landscape, street, nature, night, action, etc. For instance, most action or sports photography use fast shutter speed (mostly use 1/2000 shutter speed) Additionally, there are other factors you should consider such as lighting (Is too harsh or dark?) relative to your subject and background, or if you want to adjust the depth of any of the details, etc. That's the beauty of manual photography, it's complex yet fascinating.
very good explanation.
Hi. I dont know if its just me but you sound like the same guy from CasuallyExplained. Anyway, thanks for this. I loved your analogy.😊
subscribed. You explained in details. Mabuhay ka !
this is all good and well, but the question is; what about the water source? i.e the scene and intensity/spread of light- the water pressure. That is a huge variable in the equation especially when the pressure is never set (the 18% assumed grey as you put it). Or is that explained by metering a midtone? I do Like the video and the stool metaphor though haha
Thanks for explaining this in a easy way to understand. Any tricks to calculate these figures in an emergency? Like on the road, in a party, due to lightning conditions and were people moving? Also about a lenses. Only one. On much money to buy many lenses. Thanks 🍎
Does the math change when you use an extended lens on your standard lens?
Looking for a chart of traditional light stops, maybe put a link for one in the description to make things easier on the viewers
I already fully understand the math, and basics, of exposure but, if I didn't, I'm not sure that this would help very much!
Well I just started learning photography theory, no background, and this helped me inmensely.
Great comparison to the running water!
My brain hurts haha! Cool vid though and the analogy really helped! Thanks for sharing! Gonna add this to one of my playlists to refer back to :)
Thank you! Learnt alot
A person. Giving lecture.. who is totally confused and diviated with his core topic.. come on man.. time is precious!
Fantastic!!! Thank you!!!!
very clear and easy to understand. can finally get the camera off auto
Sweet Che! Go forth and take great photos! And drop us some examples some time!
Good explanation on shuttle_Apecture_iso and stop(s). Thks.
cool review man when is a photo over exposure maybe when the shutter speed is too low
Really helpful, thanks.
Simple math - yes it is, but it does not provide the whole picture. I can afford shutter speed that corresponds with the object or better move I am going to stop and is pretty limited by the lens I use - with 300mm lens I will very probably have problem to take picture at 1/50 (even with optical stabilization), ok you say I have tripod. So the apperture - f/3.5 will give totally different feel to my photo then f/16 and it's all just about depth of field and level of detail I need. And the last important thing are my lenses - zoom lenses are pretty favourite these days (well I don't think pro photographers are watching this kind of videos :-) ).
So let's assume I am going to take a picture. First thing I do is selecting a composition - so I select the proper lens or focal length. Then I evaluate what is the main object on the scene I am going to emphasize (is it a face? f/3.5 or less, is it technical picture for analysis f/11 or more, etc ...) this will also answer the question about depth of field, of course with the combination with my lenses. Then I need to understand the movement on the picture, do I want to show a movement or do I want a still moment? That will give me the shutter speed I need. The last thing is ISO - is ISO100 enough for the picture or do I need more light? .... Yes when you are taking picture on the film the ISO is already set, so you have to think accordingly (but I think you selected a film with ISO200 for the purpiuse, right?)
SO I am going to say that it is not about what the exposure needs, but what I need the photo to look like and still maintaining the exposure.
Sorry for my english :-)
s3icc0 omg that was so hard to read that all but its 2020 now and I just finished
holy sht it actually makes sense now. thank you
Half box speed always meter for the shadows! With c41 you will never fail.
Thanks, this was helpful!
Great analogies!
very helpful thanks.
I had a fully manual camera for many years, Loved it. But I stopped taking pictures for a while when film got more expensive as well developing it, eventually we got a digital Fuji fine pic's fully automatic and It was pretty good! Missed the SLR though and last year I invested in a Canon Rebel T4i 18-135mm lens and Love it, Still getting the hang of the Digital settings and Being a bit dyslexic it does get rather confusing. Thank you for explain this and your analogies are really good!!
Great great video ...nice examples given ,getting those complex terms clear, helped a lot ,thanks a ton.
Thank you, this was great! I been introducing my daughter into the art of Photography, she understood the principal.thanks
"Whoever receive a righteous man, in the name of a righteous man, receives a righteous man reward" Matthews 10:41 and He who gives will never lack,
great tutorial,thank you..
Nice Explanation
You seem to have explained equivalent exposure's. You started out saying you were going to trick the camera into presenting 35% gray instead of 18% gray as the aim exposure. I must have missed something. Equivalent exposure will still push to drive the exposure to 15% gray. Seems like you would have to underexpose for the positive to change the aim point. and change the shape of the curve or at least the straight line portion of the curve/(gamma).
nicely explained
Dude you and your bicycle are awesome..... lolzz
great lesson! thnx!
Great video!