Photographic Contrast

Contrast, Photographic

 

a characteristic of a blackand-white photographic image according to the ratio of the brightness properties of its lightest and darkest areas. The following two methods are most widely used for determining photographic contrast: (1) by means of the transmission factors τ (for images on film) or reflection factors p (for images on photographic paper):

or

respectively; (2) as the optical density difference Dmax — Dmin (known as the photographic image density interval).

The greater the contrast of the object being photographed and the greater the gamma of the photographic material (if the conditions of photography are correctly chosen), the greater the photographic contrast.

References in periodicals archive ?
The photographic contrast becomes especially apparent.
is a wordless picturebook consisting entirely of photographic contrasts. Each two-page spread features an opposing pair of striking, full-color photographs - the vacant stare of a leopard rug versus the majestic prose of a living leopard; a waterfall literally clogged with litter versus a pristine waterfall; the wake of logging versus a majestic forest of great trees standing tall.

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