"What is Focal Length?" - The science behind it explained.
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- Опубліковано 5 жов 2024
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Best explanation on this subject ever.
agreed
Agreed!
agreed
disagreed. The explanation is very clear but wrong.
Nobody on youtube is as clear as you are in explaining stuff ! Great work !
ya, bro u are so clear. Thank you.
Dude. This is by far the best explainer on focal length that I've seen on UA-cam. I'm a 25-year veteran in the art of photography, but I always like rehashing the basics every now and again. Thanks for this video!! 👍🏾
This is a really good video.
3:49 to 3:53... most clear visual aid ever sir! Thank you, I never understood WHY until this very simple animation.
EXACTLYYYY
I have watched literally dozens of videos on focal length trying to get my head around it and this is hands down the best explaination.
Very insightful. I learned something about focal length that I didn’t know before.
Best video on focal length on youtube hands down. Concise and to the point and ACTUALLY EXPLAINED what focal length entails and not a dumbed down version that tells you nothing. Thank you. Subbed.
Agree with many here … never seen a better explanation of this subject, along with the overlays to articulate it soooo well!!! My 8 year old learning photography absolutely adored it!
Many thanks!
Thank you for taking the time to put the graphics on your hand movements during your excellent explanation. Tip top
I love it when content such as this gives you "Ohhhhhhhh" moment, connecting multiple concepts together forging an even stronger understanding. Thumbs up for that.
Bravo! You just answered several longstanding, nagging questions I’ve had about this topic that all the textbooks don’t treat well or ignore entirely. Showing the path of the light and the point of convergence layered on an image of the camera and lens was a brilliant way to communicate this information. Thank you!
Brief and simple to understand and very informative. It has answered many questions that many other longer videos on UA-cam could not explain. Excellent!!!!!
Simple and straight forward explanation... That is Dave's style.
Explanation and simple graphics made this a total winner. Thank you!!
This reminded me of the same topic back in my third grade in my high school. now i can connect the dots. thanks man.
this is the best explanation on youtube
Best explanation on UA-cam. Thank you mate.
came across your channel few days ago. you deserve way more subscribers Dave!.. the way you explain is easy to understand, the graphical overlays are simple but effective.
Great content.
This video will never get old. Thank you. Clear and concise.
Nobody explains this topic so great as you did. Great job!
very good explanation, I always watch youtube photographers that say they don't want to jump into the math and annoy us till I figured out that they actually don't know anything about it. however, I think any person who call himself a photographer needs a basic understanding of camera electronics and optics, so great job and I am looking forward for more content like this.
Thanks Nader, I already have a few other videos similar to this on my channel but no doubt there will be even more in the future 😊
Dude this explanation was PHENOMENAL
Thanks so much for the explanation! I was meaning to look this up sometime, and your video just came up. Great explanation!
👍Good time use, not wasted at all. Love the simple but very clear overlay diagrams, along with vid focus changes, and the inversion. A keeper. Don’t recall seeing other vids use your effective overlay technique - instead they cut away to charts, sometimes hand drawn.
AWESOME.....great work and masterfully explained ! 👍
I am photographer for nearly 10 years...I never thought about this...This makes totally sense suddenly!Thank you very much for the lesson !
Super great video with fantastic explanation, even a beginner will fully understand this
Nice explanation!! Cleared my Focal length and lens size doubts!!
Jesús never heard a clearer explanation for this topic cheers mate!
Best video on this topic. I have been looking, and no one is as clear and precise with the best examples. Thanks so much for doing this - I was pulling what little hair I have out!! Great job.
Bro you deserve the Nobel Peace prize for this explanation and break down of this SM!
I spend a lot of time finding a clear explanation about the focal length until I saw this vid! Loud voice plus clear explanation = great and really helpful video. Approved 😉👍
Brilliant best and easiest to understand video on focal length I've ever seen.
Glad it was helpful!
best illustration about this topic so far! thanks!
You're welcome 😊
Самое лучшее объяснение темы, из тех которые я встречал на просторах сети. Спасибо!
That was the best video on focal length I have ever seen. Thanks so much, I learned a lot.
Finally, someone who doesn't just say "the higher the number, the more zoomed in it is"
Awesome video!
Great diagrams to explain. I what the focal length was the distance, but didn't think about how that affects the field of view and therefore the size of the lens.
A very fine refresher...Thank You Dave...
I am so learning from a true master - thank you! 😎👍
I suspect we all are - ouch ;)
the brain does not compensate anything. we live hanging from the ground.
Absolutely fantastic. Before I clicked the video, I really was not expecting to learn so much, geez.
Thanks, glad you enjoyed it ☺️
Excellent, I searched and now I found your simple explanation of what mm measurements on a lens means. Big thank you.
An excellent explanation. Clear and to the point.
this is amazing.
I spent soo much time watching many videos, but none of them got straight to the point like this guy.
this video is informative and straight to the point.
Nice one man....
I went to photography school and that’s basically how it was explained and yet back then we have no idea what a digital camera could do, like none. We did most of our assignments on film and it was explained the same way but using “film” instead of a digital sensor. In fact I got the basic idea in my head that it isn’t what most people think because they’re not technically trained to think that way. Now when I pick up a lens that is either a fixed or a zoom or macro I see this measurement from that converging line of focus and the distance to my sensor being the measurement I’m intending on using.
Very highly informative video on this topic, you clearly explained everything so that an alien would also easily understand !!! Nobodycan perfectly and correctly explain it more than you !! Hat off !!!
Excelllent, clear and concise tutorial. Brilliant!
Glad it was helpful Peter
finally i learned the science behind focal length, thank you very much sir
Thank you for not dumbing it down. Trying to make the explanation "simple" to often only makes it confusing.
Finally someone who has explained this perfectly - thankyou!
Excellent my man! Been racking my brain. Thank you
Others have commented this already, but this explanation is the best I've seen, I finally understand focal length.
The only channel (I’ve seen) to actually say what focal length is.
Simple, easy and best explanation. Great job dude
Excellent explanation in regards to focal length distance, angle of view, aps-c vs full frame sensor, and physical size/length of lens.
Absolutely cracking explanation! Thank you
As an optician it was very difficult for me to understand the meaning of focal length in photography and i was really confused
But you explained it very well and made me clear
Thank you bro
Uncle k1❤
Thank you! Finally a good explanation on this topic!
Thank you for the explanation! I watched a few other videos and couldn't completely make sense of it until yours. Great job!
Best explanation ever ... point of convergence was deal killer. No body explained like you did. I saw 10 videos and I was all confused but not any more! Thanks!
Great video. You cleared up some misconceptions that I had. Subbed. Thx!
Fantastic video. Well put together
An excellent explanation of focal length, exactly what I came here for, thanks 👌
Best explanation I've heard. Great video!
I didn't learn anything that I didn't already know but still, I thank you for this video because it will help me explain it to my friends at the Photo club.
You just made my life easier 👍🏼
THANK YOU!! Best explanation on the internet
Great video with a simple explanation!
Amazing bro looking for the right awnser and theory and you video was the awenser thanks so much well done explaned
Man, super content: clear and compact !
hi Dave, thank you so much. so the point of convergence is somewhere within the lens, not on the sensor. That is a very important piece of information. I will check your other videos. thanks again. we need more science about photography.
Am I the only one AMAZED by his motion tracking !!?
Truly a great explanation.
Thank you so much for this super clear explanation of focal length. I finally understood it, thanks to you! Brilliant job, thank you for using those lines! 👍😁🙏
As simple as it could get. Keep it goin'
Best by far explanation on this subject....thank you ..
Thank you Jim :)
Excellent video Dave, im in for version two of this :)..keep em coming. Huge Thanks!
Haha, that maybe something for the future 😊
Amazed by the explanation!!
Small point: the image is not upside down, but rotated 180 degrees. Up is down AND left is right.
or flipped in both the horizontal and vertical plane. The same effect as rotation, accept rotation implies a motion that doesn't occur.
It is upside down then. ;)
David Marquez yes and left side right, which was the point of the comment...
Edward Noble to be precise an inversion occurs, not a double flip, that implies flips that do not occur...
"Up is down" that is the meaning of upside down
Learned from you the easy way. Thanks, chief.
Awesome video and thanks for making it easy to understand! Perhaps you could even make a part II of the video where you use the same diagrams light ray diagrams to explain the field of view and equivalency of focal lengths on different sensor sizes. You alluded to it early in your video but it would be very clear when you compare for example a 200mm M4/3 lens and a 400mm FF lens with the same field of view but the m4/3 version can be so much smaller due to the focal length being shorter.
THANK YOU SIR
Thanks man! Clearest explanation!
great explanation, both verbally and visually
Thank you 😊
Simple topic, explained simply. Perfect!
Great video
Exactly what I needed to hear.
Best explanation by far! 👌🏻🔥
Great work I have just got the ultimate explanation thanks
Thanks. This makes so much sense.
Excellent video! Very well explained!
THIS VIDEO IS AMAZING!
THANK YOU SIR!
I agree with other comments , the best video explanation on this subject.
Well done Dave
Really clear explanation. Thank you.
OMG, your diagram is off the charts! Thank you!
Lucid explanation. Thank you.
Brilliant! Good work man!
Thanks for solving the mystery of the day for me but from what you have just described for me and what I have read about the how to calculate focal lenth yourself but I guess I have plenty of time to work it all out for myself chhers mate
So helpful tips. Thank you Dave:)