Why is aperture backwards??

[RobertCarter658]

So, I get that larger f numbers like f/22 actually mean that it's a smaller opening and that smaller f number like f/2 is a big opening. I learned that thanks to a really helpful beginner video I just watched - this video. But my question is this...WHY is the size of the aperture backwards from the numbers. Shouldn't f/22 be a big aperture since it's a big number and f/2 should be a small aperture since it's a small number???

 

[Anirban]

Understanding f Numbers | Useful Photo Tips

usefulphototips.com

read this

 

[fade2black]

Think of it in terms of depth of field. f/1.4 is a small number and has a small depth of field. f/22 is a large number and has a large depth of field.

 

[RobertCarter658]

Understanding f Numbers | Useful Photo Tips

usefulphototips.com

read this

ok thanks

 

[RobertCarter658]

Think of it in terms of depth of field. f/1.4 is a small number and has a small depth of field. f/22 is a large number and has a large depth of field.

thank you