You've almost certainly seen a histogram on your camera's display at some point, but if you don't take photography particularly seriously you might not know what it tells you. Well, you should—and this video explains very simply what you need to know.

Created by John Greengo for CreativeLive, this five-minute snippet breaks down what the histogram actually is, how to read one, and what it means for your photography. If you're in any confusion whatsoever about the concept, you should give it a watch. [Picture Correct via Peta Pixel]