Black's Photo Glossary
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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BACKLIGHTING
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The placement of the main slight source behind a subject. Backlighting can be either natural or artificial, depending on the context of the photograph.
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BATTERY CHARGER
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A device that plugs into the wall and recharges depleted rechargeable batteries. Never use a battery charger to attempt to recharge Alkaline batteries as they may explode. See also RECHARGEABLE BATTERIES.
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BITMAP, BITMAPPED IMAGE
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A computerized image made up of tiny dots (or pixels).
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BIT
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The smallest unit of data in a computer. A bit can have a value of 0 or 1. See also DIGITAL.
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BLACK & WHITE
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Abbreviated as B&W. Black & White photographs are rendered in degrees of a single shade: grey. Because they do not show colours, B&W photographs represent degrees of luminosity and are therefore based on highlights, shadows and contrast. See also MONOCHROME, GRAYSCALE.
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BLUR
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A lack of sharpness in an image. Unintentional blur often the result of improper focus, camera shake or motion at slow shutter speed. Elements in a photograph can also be blurred for artistic effect by using the above techniques intentionally, by tracking a moving subject against its background, or by adjusting the camera’s aperture setting to decrease depth of field. See also APERTURE, DEPTH OF FIELD.
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BORDERLESS PRINTING
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The ability to print from edge to edge on photo paper with no white borders.
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BRACKETING
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A technique that consists of taking a series of different exposures of the same shot to ensure the best possible picture quality given the light conditions. Usually a shot is taken at the reference exposure based upon lighting conditions, then shots at the next highest and the next lowest exposure setting (i.e. stop). Some cameras feature an automatic bracketing feature that allows you do to the same thing without having to manually set the exposure values for the additional shots. See also STOP.
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BUFFER
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Internal memory in a digital camera that stores pictures temporarily before they are written to the memory card. This speeds up the time between shots, allowing you to take more pictures in a shorter time.
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BURST MODE
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A digital camera mode that takes several pictures in rapid succession and stores them to the buffer before saving them to the memory card. Especially useful for photographing moving objects.
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