I took an optics class in college and it was terrible, the professor couldn't teach his way out of a paper bag. Where were you then, FilmmakerIQ? Great video.

I learned more in this video than 4 years of Science class in high school.

@abdou6003

5 жыл бұрын

me too. the purposely keep any non white, (or Muslim) away from the books in terms of advances

Well, I know quality when I see it, and both this man's presentation skills and video craft are most certainly it.

John, Thanks for posting/producing this video, I am a high school physics teacher and I use this video in my physics classes(both AP and college-prep). The historical background about lenses really adds to the course content and your explanations 'lens mechanics' are spot on. Currently, my AP Physics 2 students are studying lenses (geometric optics) and we plan to move on to multiple lens mirror systems. Keep up the good work, great to have someone show how the content is used and applied rather than just talk about the equations and basic ray tracing! Chris Peoples Sunny Hills High School

As a physicist and film/film history enthusiast, I greatly enjoy watching your videos. My favorites thus far have been this one, the history of film fakery, and the video on the stargate sequence in 2001 Space Odyssey. Keep up the fantastic work!

Great video! Congrats on hitting 100k subs btw :)

As an electrical engineer i have to say your videos are very very very useful and love to watch.

As always, nicely done sir. Always impressed with the content and what must be an incredible amount of research (and production) to pull these off. And congrats on 100,000+ subscribers. :)

This is the greatest teaching video I have seen on the internet so far and I have seen. I learned a lot and I will now start binge-watching your tutorials.

Thank you John Hess! For all you videos. You're an amazing teacher.

25:27 minutes without pausing the camera! And every single word worths to be there... Thank heaven I found this youtube chanel, thank you very, very much!

Man, I am seriously looking forward to the next video about the properties. This one was already fascinating!

Man you are freaking good at this...these videos are the best I have ever seen on the subject.

Wow, just wow! That is probably the most comprehensive intro to lenses on KZread. Extremely instructive and eye-opening.

I cannot thank you enough for spending countless hours creating these videos and sharing them for free!

Can not Get Bored Of Repeating This ... Thanks John ...

This channel is simply awesome! As a photographer, physicist and amateur filmmaker I just love every video. I want more!!

Such an entertaining & informative video that reflects the research & time spent on composition that was needed to create it !!! Well done !!! It's clarity & continuity are the result of a lot of work !!! I wish so much more had been presented in this way throughout my education - the best comment I can make is that " through this presentation - I undertook more investigation & research of the subject !!! Thank you

Lovely work! Your demonstration of the principles of geometric optics and the evolution of lens design is really great. Thanks you.

Seriously, great work with these comprehensive and clear videos. Keep it up!

I realize I just showed up 8 years late here, but I have to say this was an excellent video! Your presentation is fantastic. Now I have many years of videos to catch up on. Thanks!

I have become a huge fan of your teaching methods over the last 48 hours. I am a aspiring filmmaker and you manage to hit all points of interest. Thank you!

The video was posted 7 years ago but still teaching the students in 2022. Thank you for creating this video.

@FilmmakerIQ

Жыл бұрын

Good thing the basic science of lenses don't change ;)

A wonderful upload, both in content and quality of production, thank you very much.

Dude, your videos are the best. Thank you so much for taking the time to make this

Wow man, that was amazing story. Can't imagine amount of effort to put it all together. Well done and thank you for doing this. Cheers.

Fantastic video, I can only imagine how much research you go through to make these videos.

Absolutely fascinating. Loved it. Let's have more stuff like this please.

A phenomenal amount of work for one person. Thank you for the video.

Congrats on 100.000 subscriptions, Very well deserved

Wonderful!!! I look forward to watching the rest of the series!

Excellent video, thank you for always putting out great quality content!

This is the coolest demonstration I've seen on KZread. If you did science videos, you'd probably be best science channel. I love the clear and easy to understand speaking style, the quality demonstrations, and the extra depth of research. I also like how you leave little mistakes in, which adds humanity. The thumbnails are also excellent branding. As soon as I see one, I instantly recognize it as an F-IQ video.

You are a genius,I am a Msc physics student and I loved it,it illuminated me and gave a large picture to see. I now know what my electronics subject was trying to teach me. Thank you so much,it helped me a lot.

Watching this video is like striking gold. I normally watch KZread videos at 2x speed or faster these days. I'm going to have to come back to this one when I have time to digest it properly.

Brilliant!!! Can't wait for the next installment.

Thank you for this. I'm not unfamiliar with optics and photography but I have been struggling to understand at an intuitive level how DOF works and your fundamental optics explanation described in both diagrams and real world made it all click into place.

Very straight forward and informative documentary. Just got yourself a new subscriber.

You Sr. are awesome. You pierce my pea size brain empty of photography processing knowledge, and make feel I can accomplish the two short film projects I've written, just to show myself That I'm capable. Thanks again.

I have never seen such an insightful video on lenses before. This is a treasure trove of knowledge and learning. Thank God I came across this video. AMAZING..!!!

This channel is amazing. There´s a lot of interesting and cool stuff. Keep it up!

very good info thankyou for making these videos obviously tons of time and research was put into it

This video is absolutely incredible! Thank you so much!

You guys have so e great technical(non-) explainations. I was really into my Random House encyclopedia when I was younger.

I got so much info out of this - and it was demonstrated in a way I could understand. really helpful!

Great video again! Thank you! I would pay to see more of these :)

Spent a number of years working in and around the chemistry of photography. The basic chemistry is straightforward but in the real world it gets very complicated. Same for lenses, the basic principles are pretty straightforward but in the real world they are confounding. Always fun to learn but it has always amazed me how these two disciplines got together to give us photography. And all that before we consider digital. Excellent presentation by the way. Thanks for posting.

(March 2023) - Your video should be required viewing for all very interested photographers. Thanks for the history, custom ray tracing, and explanations at an easy pace. Now I have a different appreciation for my SIGMA 150-600mm F5-6.3 zoom lens carefully made with 20 lens in 14 groups. It's a workhorse! Keep doing what you're doing!

Even with some of the omissions pointed out in the comments, an extremely well-made, instructive, and entertaining video. Definitely the most fun science lesson I recall in a long time. Keep 'em coming, John - you rock!

Thanks for this free class. You are the best!

Excellent! Thanks for this great explanation of lenses.

Thanks so much for this. Excellent video.

This is great. Thanks for putting it together!

Who would've guessed that the best explanation of the physics behind lenses I would find would be produced by someone focused on cinematography. I watched at least 20 other physics videos about lenses and all those mooks like using rulers and markers to do their ray diagrams. Finally someone who uses some real life examples! Thank you

Excellent explanation, thanks for this lesson.

Great video, as always!

sir...! you and your experiments are so awesome

The slowly erasing text mistake on Alhazen at 2:03 is a funny quirk! Oh those funny thing we don’t notice until we publish and then KZread doesn’t allow for redactions or replacements... maybe my comment was a bit more about that aha! Keep up the great work! These videos are incredible for feeding the curious!

You are the BEST teacher!

What a great video. Thank you so much :)

I am glad i subscribed here, these videos are great :)

Wow man what a fantastic way to explain lenses and history

I seriously love this channel.

Good stuff! Nicely done!

truly wonderful video thanks

brilliant video essay, love when I see a new video by you cheers

Super video. Thanks so much for making it.

fantastic once again!

The topic of lenses usually is quite boring ... but this is a very interesting video - especially the section with the laser- and lightbulb-explanation with moving lenses! - Thumbsup! :-)

This channel is just great and awesome :)

I loved this video. Getting a grasp of what my lenses do when I'm taking photos should help in the process of taking photos. :D

this is an amazing work!!

Wow soo good. Crazy the amount of time you put in these videos!

Once again, very impressive.

Best explanation of how a lens work I ever saw.

I consider myself a smart guy, hell my tested IQ proves that out. But, man, there's a lot in this, I may need to watch it again to grasp all of it. But, my interest in it and understanding it as all due to John's enthusiasm and the way he presents it. It's really incredible how he tells and teaches these things and while he can blind you with science and numbers, he can utterly capture you into it. I honestly had no idea how much went into how a lens works. I, vaguely, knew about things like F-Stops, focal lengths and so forth just from the basic stuff I've learned and self-taught, but... Man. I hadn't even scratched the surface on understanding! Bravo, John. You really are amazing at this. One thing, though.... Did you forget we're in the 21st century now? ;)

@venaretro5444

8 жыл бұрын

+Brian Straight Being smart dosnt mean you can instantly undersant complicated concepts.Also IQ tests are BS.

Holy moly your channel is growing fast!

Brilliant video!

Wow man. This video is so damn good! Cant wait for more! The more in debth the better! I subscribed so hard i broke my mouse!!!

Fantastic video!

Fantastic video thank you so much

I am enlightened, thank you.

another great video, keep going!

Really informative video, thank you

You guys are the best!

This is fantastic!

This is awesome. Thanks

your videos are awesome! thanks a lot

Thanks again and again!!!

You're a really good teacher!!

Great stuff!

Sir, this video is fantastic! This is a Physics and History class of the top level! I will get some of your products because you deserve - and because they're cool. I would suggest you make a video (if you haven't already done) about focus and start with the pin-hole camera. I've been watching your videos and they are high quality creations!!! Thanks!

@FilmmakerIQ

2 жыл бұрын

I've done quite a few on focus actually :)

What an amazing video!!!!!

I'm rewatching your renewed video and as always you go deep and clear. But now I wish I would say something last time (in case you listen and change it) but when I explain the upside down picture I usually take a lens in a room where you could see the outside as shown from a window appear upside down. Maybe instead of a simple 2 color light bulb you could use (not sure I use the right word) a slide, like in a slide show where a colorful image will appear upside down and then it will be easier to see the focus effect

amazing tutor, amazing voice over

A interesting tangent in the history of optics is presented in the documentary "Tim's Vermeer". Somehow this video reminded me about that documentary.

Great video!

Job well done !

this video is awesome! lol today I had an exam about this (and more) in film school

Cant wait for the next one.