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Results tagged with optics
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user 48508
Optics is the science of light, and in photography often refers more specifically to to the properties and construction of lenses or the technical aspects of light sensors.
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focal length to aperture relation while zooming - is my russian lens lying to me?
f/4.5 doesn't mean that the hole in the iris is physically 1/4.5 times the focal length. It means that the size of the image of the hole, as viewed from the front of the lens through the lens elements …
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