13 Photo Sizes Compared - Megapixel Chart explains the Megapixel Myth

Each colored box represents a certain number of megapixels. The numbers along the top and left side are print dimensions in inches at 300ppi. The visual version of The Megapixel Myth at http://www.kenrockwell.com/tech/mpmyth.htm -- "A 3 MP camera pretty much looks the same as a 6 MP camera, even when blown up to 12 x 18!"

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