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Discussion and Debate
Discussion and Debate
Physical & Life Sciences
Constants
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<blockquote data-quote="Tom 1" data-source="post: 72080783" data-attributes="member: 404020"><p>Aha. Basically (prior to advancements in image stabilisation) with a longer focal length you need/needed a faster shutter speed to avoid light movement over the surface of the film (sensor). I have a vague notion that has something to do with photons bouncing around within the lens. Is light speed constant through glass and does it depend on how much glass or how that glass is shaped?</p></blockquote><p></p>
[QUOTE="Tom 1, post: 72080783, member: 404020"] Aha. Basically (prior to advancements in image stabilisation) with a longer focal length you need/needed a faster shutter speed to avoid light movement over the surface of the film (sensor). I have a vague notion that has something to do with photons bouncing around within the lens. Is light speed constant through glass and does it depend on how much glass or how that glass is shaped? [/QUOTE]
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