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Ethan Wilson——Works at SpaceX, Lives in Los Angeles. Graduated from Massachusetts Institute of Technology (MIT) with a degree in Aerospace Engineering.
An aperture is a lens opening through which light passes on its way to the sensor. It is expressed as a ratio of the focal length (that is what the "f" stands for) and really should be written f1:2.8 instead of just f2.8. The number is just the size of the aperture compared with the focal length.read more >>+119962023-05-01 03:29:27
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