Pentax S7 Operation Manual - Page 54
Taking Pictures, Using Histogram, image. In general, when the exposure meter setting for your image is
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Using Histogram A histogram is a graph showing the Number of pixels brightness of an image on the horizontal axis and the number of pixels on the vertical axis (distribution chart of the brightness). The histogram will help you detect the brightness of the image you have taken. For instance, the graph peak tends to appear on the left side for a darker Brightness image, and the graph peak tends to (Dark) (Bright) appear on the right side for a brighter 4 image. In general, when the exposure meter setting for your image is well-balanced, the graph peaks tend to appear in the middle. On the contrary, when the exposure meter gets imbalanced tending dark and bright without showing a neutral brightness, the peaks appear not in the middle but on both sides. Dark Neutral Bright Taking Pictures 52