And another little thing to ponder about. Lets switch the role of the moon here. Assume that we are photographing an object illuminated by moon light. Moon is now a light source for us. So you would agree that as the object goes closer to the moon it will get more light and as it move away from the moon, it will get less light as per the classic ISL. I hope there is no difference opinion on that.
Now replace that object by a lens of equal size. Now can you explain why would it be that the amount of light falling on the lens would not change if you move the lens closer or farther from the moon?
Nov 06, 2012 at 02:28 PM
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