Aperture numbers explained - THE SCIENCE behind the aperture, 'f' and why the numbers make sense

Aperture numbers are confusing to most photographers. But the reality is: they make sense and there is a reason for them.

Wolf Amri explains how aperture numbers are calculated, why that knowledge is important in photography and will clear all mysteries regarding aperture in general.

In this tech talk chapter of our photography course, we offer insights that will help beginners to even the most advanced photographers. The science behind aperture might sound a bit confusing at first sight, but it helps understanding photography.

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[michaelkress]

This is the clearest explanation I’ve ever heard. Thank you!

[acekat]

Hands down the best photography tutorials on youtube.The best!

[arete_]

Just subscribed to your channel. Here is why:
- You are explaining things CLEARLY, and you are not rushing and jump-cutting video like 99% of other YouTubers
- You clearly KNOW the subject well enough to be explaining.
- You are correct and go for FACTS
- You have clearly taken time to create MEANINGFUL illustrations
- You have a PASSION for what you are doing
- Your English is not the best in the world (but above average), but you are not going uh... ahh.. eh... You have a script and you are sticking to it, which makes it easier to follow.

[IGATECK]

I just found your channel and I've been watching every single video, you make things so easy to understand "the more you master a skill the easier you can teach others"

[ElectricCmpany]

Absolutely the best. I saw so many videos that were the "basics" of aperture. I wanted the science of the aperture to fully understand it.

[malithaniman]

This is what we get when a pro photographer has become a good teacher...! super awesome.. Got it. thanks

[AlOne-xgdv]

and for those who do not hate maths : 2.8 ≅ 2 x √2 , 5.6 ≅ 2.8 x √2 = 2 x √2 x √2 = 2.8 x 2 ... etc ... ( √2 ≅ 1.4 )

[KimHojbergJensen]

For all these years I thought the f number was just a number somebody had chosen. Never guessed it had relation to the focal length. Thanks for showing me the light :-)

[debashishchandel]

This is just brilliant explanation. Maths made easy, interesting and relevant for photography.

[aarongrooves]

Your videos are excellent. New subscriber!
I hope this isn't a silly question, but are aperature numbers calculated exactly the same for MFT cameras? Thank you!

[panatela]

Thank you. f=focal length. Most people, including pros, don't understand these simple facts. I see and hear so many try to explain aperture without understanding that its just a ratio.

[sharathchandra]

I do not want to watch your videos without subscribing your channel even after watching this video. I gave a stop to those f-stops and hit the subscribe button.

[kerryymm]

This is an excellent explanation! Now I understand why the aperture decreases with most zoom lenses… it’s not the aperture itself changing, it’s the relation to the focal length. Thank you! 👍🏻

[earavichandran]

Best explanation found for F stops and easily understood why bigger f number give smaller hole and vice versa. Great.🙏🙏🙏🙏

[davidwalker]

Grate info. I'm new to shooting and i'm looking for a new canon t7i a starter camera. I can't find the link to chang the focal lenghts, aperature Exc.

[guptajitendra]

Have been looking for this for so long. And finally got the explanation. Thanks!

[ashish]

Wow. I was searching for this info, but it's hardly available in as easy a lecture as you explained. Simply wow. I'm really grateful to you for providing such a quality content. I'll sub and share. God bless you sir.

[cstackss]

Totally subscribed. Speaking my language of understanding a subject and as a new (analog) photographer without having taken a photo this helps greatly when choosing lenses for my use!

[petercalbraith]

Love your videos - whilst I have always known the sequence of f stops and their effect on light I have never really understood how the actual f numbers are generated !

[SanjayJoshi-lsbj]

Very clear & useful information. Thanks Wolf for such an educational video.