Article entitled, “What is a Stop? The Common Currency of Exposure Explained” found on Digital Photography School is a good read if you’re wanting a more detailed explanation of a “stop” as used in photography.
A “stop” explained
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Article entitled, “What is a Stop? The Common Currency of Exposure Explained” found on Digital Photography School is a good read if you’re wanting a more detailed explanation of a “stop” as used in photography.
Here’s a tip for shooting something white against a white background (blog post by Jerry Avenaim)
http://blog.avenaim.com/2009/12/10/photography-lighting-white/