New answers tagged magnification
Putting aside some of the details of this and strictly speaking, shooting something that is 0.15 m tall and 500 meters away on a full-frame camera will require a nearly 100,000mm long lens (which doesn't exist, or at least isn't generally available). Two lines of text tall might be 0.3 m and needs a 53,000mm focal length (which doesn't exist). Ten lines of ...
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