HP PW550 Photography Terms and Definitions, Terms, album, (DPOF), or ADC), Definitions, compression, aspect ratio, auto focus (AF), auto white balance (AWB)

Photography Terms and Definitions

Terms	Definitions
	A simple technique professional photographers use to ensure
auto exposure bracketing (AEB)	they properly expose their pictures, especially in challenging
	lighting situations. When AEB is selected, the camera
	automatically takes three or more shots with a different
	exposure for each frame.
	Auto focus refers to a camera lens’ ability to adjust its
	configuration in order to focus properly on a subject regardless
auto focus (AF)	of whether it is near or far from the camera. Auto focus lenses
	generally provide vastly superior image quality than do their
	fixed focus cousins since they do not have to rely on their depth
	of field. Also known as: “AF”, “auto-focus”.
album	An end-user created object that is used to logically group data
	objects according to some user-defined criteria. An album may
	or may not be a physical folder in a file system.
Analog to Digital Converter (A/D	A circuit that converts an analog signal, having a continuously
	varying amplitude, to a digitally quantized representation using
or ADC)
	binary output signals.
aspect ratio	cf. image aspect ratio, pixel aspect ratio.
	With auto white balance, the camera attempts to determine the
auto white balance (AWB)	color temperature of the light and automatically adjust for that
	color temperature. Many people just leave the camera set to
	auto white balance all the time.
Charge Coupled Device (CCD)	A type of silicon integrated circuit used to convert light into an
	electronic signal.
compression	The process of encoding information using fewer bits cf. image
	compression, sound file compression.
Digital Print Order Format	A standardized ASCII file created in a digital camera and stored
	on removable media along with the image files that indicate how
(DPOF)	many copies of which images should be printed. It also allows
	index prints, cropping, and text overlays to be specified.
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