A graph that shows how many pixels there are for each level of brightness. The horizontal axis represents the brightness, and the left end is the pixels for the totally black areas. The right end is the totally white areas. The vertical axis shows the number of pixels that exist for each brightness level. The image's histogram can be viewed on the camera's LCD monitor as part of the shooting data. The histogram indicates the brightness of the image. If there are more pixels on the left side of the graph, it means the image is dark. And if there are more pixels on the right side, the image is too bright.