Why 'Stops' for exposure?

Started Nov 12, 2012 | Discussions thread
sherwoodpete Veteran Member • Posts: 7,766
Re: Why 'Stops' for exposure?

JulesJ wrote:

Stopping down the light.

And its converse, "stopping up the light".
Or should that be "going up the light"?

Well, the usual converse of "stopping down" is "opening up". But all that goes to show is that conventional or colloquial terminology can be quite a world of its own, and not entirely obvious.

And I keep seeing expressions like "use a higher aperture" or something like that. Which is entirely meaningless. An aperture is a hole, like a window. Moving the window up, down, or from side to side doesn't change its size.


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