Why is aperture backwards??

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PaulCarter2478
Posts: 1
Joined: Tue Feb 23, 2021 2:22 pm

Why is aperture backwards??

Post: # 23355Post PaulCarter2478
Fri Feb 26, 2021 1:35 pm

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 - https://www.youtube.com/watch?v=fpdxMUWF0k0. 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???


Andy
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Joined: Sun Sep 18, 2005 12:01 am
Location: Saginaw, Michigan
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Re: Why is aperture backwards??

Post: # 23367Post Andy
Thu Sep 02, 2021 7:35 am

Perhaps the simplest answer is because it is a ratio or a fraction and not a numerical "size" number :-). Lots of info out there if you google it :-)
Andy

If it sounds too good to be true, its probably . . . .

Andy
Posts: 1542
Joined: Sun Sep 18, 2005 12:01 am
Location: Saginaw, Michigan
Contact:

Re: Why is aperture backwards??

Post: # 23368Post Andy
Thu Sep 02, 2021 7:35 am

Perhaps the simplest answer is because it is a ratio or a fraction and not a numerical "size" number :-). Lots of info out there if you google it :-)
Andy

If it sounds too good to be true, its probably . . . .


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