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Aperture is the opening in the diaphragm of a camera lens. For questions relating to Apple's photo management software, please use [apple-aperture] instead.
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How do waterproof lenses focus underwater?
The Camera Lenses does not know focus, it is just gears you can turn. Therefore air has nothing to do with focus. The camera uses a complex algorithm to determine when a picture is in focus or oof. An …