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aperature number vs f number

Started 10 months ago | Questions thread
AnthonyL Veteran Member • Posts: 3,686
Re: Hang on.....

Toronto Photography wrote:

Jethro B-UK wrote:

There's no such thing as an aperture number.

Aperture is numbered in f/stops. eg. f/2.8, f/5.6, f/11, f/16

The lower the f/stop the bigger the physical aperture is. And vice-versa.

Here's a guide:

Thats not true. META DATA has "Apeture" which is different from F tops. as both are listed. They appear to have an inverse relation.

What software/system is showing you this META DATA?

In future you might want to say you never heard of it rather than gaslighing.

This video does not referance Aperture Number, only F Stops/F Numbers* in a way that most photographers are very familiar.

* Some refer to F11 as f/11, the latter making it more obvious that it is an inverse relationship, ie the bigger the number the small the opening. My Canon lenses simply have 1:2.8 etc, but F2.8 is fine once the convention is understood. Canon's DPP software shows for example: Av(Aperture Value) 7.1

In 50+ years I have never seen Aperture Number as you have described and has been explained elsewhere so I don't think I've missed anything

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