Photonics Dictionary: E

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electrophotography

The photographic recording of an image formed by the alteration in electrical properties of the sensitive materials and induced by the action of light.

endoscopic photography

The photographing of objects within generally inaccessible areas using endoscopes with camera attachments.

edge contrast -> acutance

In photography, the density gradient across an edge separating light from darkness, a physically measurable quantity that correlates well with subjectively observed sharpness of definition. By...

effect filter

A color filter, generally used in photography, to emphasize certain color tones and to modify others in a picture for a more dramatic image. A blue effect filter, for example, darkens red and yellow,...

effective focal length -> focal length

The focal length of a lens is the distance between the lens's optical center (or principal point) and the image sensor or film when the lens is focused at infinity. In simple terms, it is the...

electrophotograph

The image formed in electrophotography.

ELIP

electrostatic latent image photography

elliptical polarization -> polarization

Polarization refers to the orientation of oscillations in a transverse wave, such as light waves, radio waves, or other electromagnetic waves. In simpler terms, it describes the direction in which...

emulsion

In photography, the layer of light-sensitive material (usually a suspension of silver halide crystals) that coats the film or plate.

equivalent focal length -> focal length

The focal length of a lens is the distance between the lens's optical center (or principal point) and the image sensor or film when the lens is focused at infinity. In simple terms, it is the...

exciter filter

In ultraviolet and fluorescence photography, the term applied to the filter used in the photographic system and with the exciting source to screen out ambient radiations and to transmit the exciting...

Photonics DictionaryE

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