Entertainment / Photography Glossary

Distortion: Alteration in shape and/or proportions of an image.

Diverging Lens: Lens which causes rays of light coming from the subject to bend away from the optical axis.

Documentary Photography: Taking of photographs to provide a record of social and political situations with the aim of conveying information.

Dodging: Control of exposure in photographic printing achieved by reducing exposure to specific areas of the paper.

Dolly: Frame with lockable wheels, designed to support s tripod, and allow easy movement around a studio.

Double Exposure: See multiple exposure.

Double Extension: Characteristic of large format cameras which enables the bellows to be extended to twice that of the focal length of the lens in use. It is used for close-up photography.-

Drop-In-Loading: Feature in all advanced photo system cameras that virtually eliminates film-loading problems by automatically accepting the leader less cassette.

Dry Down: Refers to the amount a print darkens after drying.

Dry Mounting: Method of attaching prints to mounting surfaces by heating shellac tissue between the mount and the print.

Dry Plates: Term used to describe gelatin coated plates in the days when wet collodion process was still popular.

Drying Cabinet: Vented cabinet equipped with suspension clips for drying films.

Drying Marks: Marks on the film emulsion caused by uneven drying and resulting in areas of uneven density, which may show up in the final print.

DX Coding: Method, whereby films can automatically set the film iso speed.

Dyad: Pair of complementary colors or any two colors considered visually harmonious.

Dye Coupling: Process creating a colored image from the reaction between by-products of color development and couplers.

Dye Destruction Process: Method of producing a colored image by partially bleaching fully formed dye layers incorporated in the sensitive material.

Dye Sensitizing: Defined as all silver halides used in black & white emulsions are sensitive to blue light. Early photographic materials possessed only this sensitivity.

Dye Transfer Print: Method of producing color prints via three color separation negatives. Negatives are used to make positive matrixes, which are dyed in subtractive primaries and printed in register.

Dye-Image Monochrome Films: Black & white negative films designed for color processing.

Dynamism: Picture structuring which relates to a sense of movement and action.

E6: Kodak's standard chemical process for developing ektachrome or compatible slide films.

Easel: Device to hold photographic paper flat during exposure, usually equipped with an adjustable metal mask for framing.

Eberhard Effect: Border effect occurring in a developed image. It appears as a dense line along an edge of high density and as a light line along an edge of low density. It occurs most often in plates develo . . . View Full Definition

Edge Numbers: Reference numbers printed by light at regular intervals along the edge of 35mm and roll films during manufacture.

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