16:9 Widescreen Photo Mode: Many digital cameras offer this mode to let you take photos that have the same shape as a 16:9 aspect ratio widescreen TV. This size is ideal if you plan on showing your pictures on your high-def set, because they'll fill up the TV's entire screen without losing any picture information.

 

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16:9 Widescreen Photo Mode: Many digital cameras offer this mode to let you take photos that have the same shape as a 16:9 aspect ratio widescreen TV. This size is ideal if you plan on showing your pictures on your hig . . . View Full Definition

Photogrammetry: Method of making precise measurements from photographs.

Photography: Literally writing or drawing with light (from the greek words photos meaning light and graphos, writing). First suggested by sir john herschel to william fox talbot in 1839.

Photolamp: Tungsten filament photographic lamp with a large diffused bulb, giving light of 3200 k (kelvin).

Photogram: Pattern or design produced by placing opaque or transparent objects on top of a sensitive emulsion, exposing it to light and then developing it.

Photogravure: Method of printing photographs from an etched copper plate.

Photogenic Drawing: Original name given by william fox talbot to his earliest method of recording camera images.

Photoelectric Effect: Ejection of electrons from an atom or molecule that has absorbed a photon of sufficient energy. The photoelectric effect is the operating principle behind 'electric eyes'; it is experimental . . . View Full Definition

Photoelectron: An electron ejected from an atom or molecule that has absorbed a photon.

Photoflood: Artificial light source using a tungsten filament lamp and a dish reflector.