September 2017
Beginner
328 pages
9h 21m
English
Content preview from The Landscape Photographer's Guide to PhotoshopBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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5 Understanding Histograms
Different levels of photography require different levels of understanding and skill. A “press the button, let George do the rest” photographer needs little or no technical knowledge of photography. A zone system photographer takes more responsibility. He visualizes before he presses the button, and afterwards calibrates for predictable print values.
—MINOR WHITE
A histogram is a chart representing distribution of values. In digital cameras and most image-processing software, the most common histograms represent the distribution of brightness or luminance values in an image.
Histograms offer important information at a glance, which can be used to judge the effects of adjustments as we apply them, as well as to avoid ...
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