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gmtime t1_iueuix3 wrote

The smaller the opening, the less the shape of the lens plays a role. This is the same as using a pinhole camera instead of a lens to focus a photograph. This is also why bad eyesight is less of an issue when there's plenty of light, as then as a matter of speaking your iris is doing the squinting.

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RepeatOsiris OP t1_iuevcia wrote

Thank you, this makes a lot of sense! This is ringing some bells to me, suspect I did learn this back in class many (many) moons ago.

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