By far the best video about this subject on YT. Your diagrams make everything so clear and explain not only the WHAT and HOW but the WHY. So crucial to a proper understanding for beginners. Great job!

I've been doing photography for over 15 years now, and this is the best explanation of DOF I've ever seen.

I just reached here by chance, maybe thanks to KZfaq algorithms, but tell you what. This video is treasure for someone who’s just beginning to learn to photography ! Can’t thank you enough for this video. This is pure gold ! ✨

One of the best videos i've ever seen in my life. Tnx a lot

Hands down the best explanation of these concepts, i understood all of them in some capacity but was missing the real grasp on the entire subject matter. Your video brought it all home instantly and very clearly. Thanks!

I love your camera stuff. 10 years later and still nobody has explained it better

This explains every single question I had about depth of field. Thank you so much.

I'm a photo newbie, and have been struggling with all of this. Your explanation nailed it!! Thank you so much. Your diagrams, and simple explanations drove the point home for me. I know this is an old video, but timeless! Thank you sir.

First time on this channel, Im a newbie just got my 1st fujicam few weeks ago. Of all the videos I have watch this video nailed all the those lengthy tutorial videos. Its like by watching this I have watch everything. Glad that I have found this channel. Thanks alot 🎉

out of more than 20 videos I've followed so far this is the best explanation clear off all my doubts.thanks!

If you are looking for nerdy mathematical explanation, you are at right place. Thanks a lot Dylan .

100's of videos and sites over the internet and only explains what the aperture does.. this is the only video that explains how the aperture works !!! BRILLIANT !!! Thanks a ton !!

That toothpaste analogy was simply- fantastic! DoF concept is now cemented!

SAW THIS VIDEO APPROXIMATELY 3 YEARS AGO. ONE OF THE BEST AT EXPLANATIONS

Dude this video is more than 8 years old and it's one of the best explanations that actually stuck with me. Thank you!

This is the best explanation of how DOF actually works that I've EVER SEEN. Thank you :)

Excellent, excellent video. I was about to sleep but this kept me awake the whole 16 minutes and an extra hour to think about it. Thank you.

This is the best visual explanation of how qualitatively DoF relates to focal length, distance to the subject, and aperture.

I think I have watched over 100 videos on the subject of DOF, but none of them have fully (keyword: fully) driven home how DOF works. Now I finally understand how DOF works, thanks to you. Well done; great video, great explanations.

"THE" best video I have watched on DoF. I finally understand why letting less light in (small aperture) gets more things in focus as it is little counter intuitive. Can't thank enough :). Subscribed.

I've been trying to understand this for a few years. This is the first time I believe I have grasped the concept. I was trying to figure out why my 35mm F2.8 didn't look the same as my 200mm F2.8. Very helpful.

Had to set my video work to the side for last 2years. Coming back I needed to review and found your videos...Great instruction.

Best presentation on DOF on KZfaq or any course I've done. Now I truly understand. Big THANKS Dylan.

Thank you, thank you, thank you! Finally, I found the video that would explain how the depth of field / sharpness changes when you get closer eventho you have a certain f stop.

Ive been looking for an explanation for so long and finally got recommended your video. Lovely visualisation clearing every question i had❤

I've watching tons of video of f-stop, aperture, focal length and dof but still wonder how f number literally affect dof. Until I watch this video. Everything is crystal clear now. Thanks so much sir.

The toothpaste analogy was the perfect way to explain DOF. I hope this youtube site explains some popular digital video/camera camera concepts like super 35 vs full frame 35...and cropping from using different lenses.

This was so perfectly explained. I understood that it worked, but now I understand WHY it works. Bravo!

Before I watched this video, I had a very basic understanding of DoF but I now have a much more fuller understanding because I know HOW this all works. Thank you so much!

I'm currently helping someone get into the world of photography and straight away after watching this video nearly a year ago, I knew I had to find it and share it with them. This video helped me so much!!

I’m sharing this with a bunch of young photographers. Great foundational concepts with digestible teaching… basically super simple and easy to follow and understand. Great Job Teacher!

Thank you for an actual explanation how the aperture affects DoF.

Best and complete explanation of what DOF is. Thanks for sharing

This is by far the best video explaining how to control depth of field.

Underrated tutorial which should be inculded in the text books.

Thanks for going a little bit more in depth than other youtubers I found. Now I learned the thing I wanted to know (the effect of focal length).

I just got into photography. Never studied it in school. This video is literally perfect for helping me understand focal length. Thank you.

Had an exam today and 10 years later this video saved me. thanks!

This is the only video you need to understand how DOF and Hyperfocus works.

Simply amazing...you explain it so good that it appears easy...no other person has ever been able to explain it so clear. Thank you

It is long since i am seeking such explsnation. Ultimately i got it from you. Thank you.

REALLY HE IS A GENIUS, HAVE AWESOME KNOWLEDGE ON PHOTOGRAPHY AND RELATED TO THIS FIELD.

This is the clearest explanation of anything ever

Absolutely the most understandable explanation ever of depth-of-field! Thank you.

Thank you so much for these videos, understanding the physics involved is a much more intuitive way to understand these different settings. The scales seem so arbitrary, but I understand it so much more now.

OMG this is insane ! i was struggling with these topics no other video is as clear as yours thankyou so much !

Quite exceptionally well explained, right to the point in an extremely structured way. Thank you so much for this great video!

That is the Best explanation I have seen. Though I am a beginner, I understood everything. Thanks.

This video should get a Nobel peace prize....

Thank you. Not too many people cover the DOF widening the further back you are from your subject. This is exactly what I was looking for and the reason for my low F-stop portraits being blurry.

Elucidated well Demystified the concepts with tell tale pictures and illustrations Great Sir

You have shown us the depth of this field. Your knowledge has shed light and helped us focus on the subject. Thank you

Hands down the best explanation of the subject

I have watched lots of videos for this topic. but this one is the best one! Thank you very much for making this video 🙏

Concise, detailed and simple. This is why you are an awesome teacher

Best description of this subject on KZfaq!!

Excellent explanation on DOF. I watched it multiple times to grasp the concept. Thank you for creating this video.

Great ! More intuitive explanation than almost every other video on the subject.

This is so helpful! I’ve always just felt that I need to just memorize the right settings to use for what I wanted and I struggle to remember everything. Now that I understand what is happening, I can reason my way though each situation!!

The best education video for DOF. thank you

Excellent explanation!!! Would love to hear the exceptions and more details on the subject. Thank you so much!

Just Wow! You taught this confusing concept with so ease. Many thanks Dylan!

Loud and clear, best video on the subject

I am waching this video in 2023 jan. It is perfect! I learned so much. Thank you!

Thanks a lot Dylan. Really appreciate. Finally I understood logic behind depth of field.

Very informative video, rare to find such an analytical explanation. Thanks for making and sharing this video

Amazing explanation! Simplified the concept down to the core... I'll recommend this to even ophthalmology students, it's that great!

Incredibly concise. The illustrations were really great tools. Thanks!

The best explanation i have ever seen.. great job.. usually seen others explaining only about DOF with respect to focus distance.. first time seeing related to camera lens and focal length and reason why the DOF varies.

Best explanation so far on the subject. Thanks a ton!!

I love your way of explaining technical aspect of photography, and I'm looking forward to learn more from you .

You did an amazing job making it so easy to understand! Thank you!

Thank You, the way you are explaining are very practical, scientific and easier.

Amazing! Best explanation I've seen on the topic! Thank you!

One of the best explanation I found about DOF

Excellent, can’t thank you enough. keep doing this. You’re great.

Thanks so much. I wanted to understand why a larger aperture means a narrower DOF. Very clearly explained.

Awesome video! I have trouble with this topic but you made it so easy. Thank you very much!

Very clear and comprehensive tutorial. Thank you!

great video and explanation, actually the best I've seen on you tube. also, a moderate paced, pleasant voice which is important to me. I am saving the tutorial and subscribing. thanks

thanks, dylan, for the video. it's been very helpful - clear and to the point.

Thank you very much for your explanations. It helps me alot. Please keep up with the work!

Great video! Many thanks for making a key topic crystal clear.

So much better regarding explanations versus videos of today. Nice Work. Thank you.

Brilliant explanation.Very easy to understand. Much appreciated

I was too confused thinking a large aperture always takes in lots of light and why it's not covering larger area(dof) on film.....now i completely understand the whole logic. Really a great explanation 👍

Awesome explanation 👍Really easy to understand now how DOF works and how to control it.

Fantastic and very clear explanation. Thank you for this!

Super clear and to the point. Thanks for posting.

Not sure what idiots gave a thumbs down. This is an excellent presentation.

best video so far explained the subject.

I'm a medical student and i whatched the video to understand how the actual human iris chan change the depth of field .. amazing

Thank you! This video is really clear, and I like the use of drawings!

Such a great explanation of depth of field. Great video!

Unlike most explanations made by photographers, yours is more scientific which is to my opinion way better to understand the concept.. Optics is a science not an art! however it seems to me that most photographers are more artists than scientists. Great job Dylan I added a click to your thumb up hahaha / Dr. Ahmed Fathie Ph.D.

Also I wish you had more tutorials about photography and video of this kind. I've seen the 3 you have and they were all fantastic!

sample and straight forward, English is my second language, but I totally understood. Thanks.

Beautiful video. Wish all subjects could be taught like this!

Thank you! Exactly what I was looking for!

I am having the moment of enlightenment 😍