histograms
HOW TO READ A HISTOGRAM
September/25/2008 04:49 PM Filed in: Digtal Camera Tips
Before you can read a histogram, you first need to understand what one is. A histogram is an exposure graph. It has nothing to do with white balance, focus, composition, or image quality. The pixels from the image are looked at individually and mapped out on a graph according to their density (the amount of information recorded) from darkest to lightest. This instantly tells you if your image is correctly exposed, and nothing more.
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