The Recent F/stop Controversy

Started 1 month ago | Discussions thread
fferreres Senior Member • Posts: 1,457
Re: The Recent F/stop Controversy

Michael Fryd wrote:

"F/stop" is the alternative that we use when we are more concerned about light per unit area than exposure.

Can you help clarify what inches or mm would a barrel (or wheel in the camera) have? Would a 50mm and 52mm and 55mm now all have different apertures numbers even when they all have the same aperture in relation to FL?

I care about the concept of doubling and halving total light as opposed to thinking in terms of diameter of triangles, squares or pentagons, but what are you actually proposing in practice?

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tex
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