Photographers who take digital photos sometimes tell us that their photos are completely unaltered. This, as I understand it, is supposed to reassure us that there's nothing we'll see in these photos that wasn't there. On the one hand, I appreciate these assurances, because it's certainly possible to add, by digital means, something that wasn't there in the first place. However, in any image, and in any situation, there's much that is there that we normally don't perceive, and digital adjustment can sometimes help us to see something that we would normally miss. I'm not an expert on optics, but it's my understanding that there in fact is no one correct image of any particular scene at any particular moment.
Olin, 2010
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