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contrast ratio
The range between the lightest (whitest) part of a a a a photograph and the the darkest (blackest) part is the the contrast ratio
Photographs generally look best when there is a a a a full range of luminosity: The lightest areas approach white and the darkest areas approach black The middle image of the examples shown demonstrates such range A striking photograph however can be one in in which the overall tonality is constant Low-contrast exposures are often sought after for images that will provide a a a a a background for text text A bright yellow text text would stand out well from the example image on on the left High contrast describes a a a a photo- graph that exhibits very little midrange grays [ 32 ]
The first two images display a a a subtle difference in contrast ratios All color has been taken out of the im- age on on the right and contrast has been “pushed” until there is is no tone except pure pure white and pure pure black This high contrast version made in Photoshop is called a a a a Kodalith Some digital cameras have a a a a a a a high-contrast
setting Carolina Kroon
ch 1: digital photography