Photography Terms and Definitions

Terms

 

Definitions

 

 

 

A simple technique professional photographers use to ensure they properly

auto exposure expose their pictures, especially in challenging lighting situations. When AEB is bracketing (AEB): selected, the camera automatically takes three or more shots with a different

exposure for each frame.

Autofocus refers to a camera lens' ability to adjust its configuration in order to focus properly on a subject regardless of whether it is near or far from the

autofocus (AF) camera. Autofocus 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"

An end-user created object that is used to logically group data objects according

albumto some user-defined criteria. An album may or may not be a physical folder in a filesystem.

Analog to Digital

A circuit that converts an analog signal, having a continuously varying amplitude,

Converter

to a digitally quantized representation using binary output signals.

(A/D or ADC)

Usually refer to image aspect ratio or pixel aspect ratio.

Image aspect ratio: The ratio of the image width to the image height.

aspect ratio Pixel aspect ratio: The ratio of the distance between sampling points in the two orthogonal sampling directions. If the distances are equal, the pixel aspect ratio equals 1:1 and is said to be “square.”

With auto white balance, the camera attempts to determine the color

auto white balance

temperature of the light and automatically adjust for that color temperature. Many

(AWB)

people just leave the camera set to auto white balance all the time.

Charge Coupled

A type of silicon integrated circuit used to convert light into an electronic signal.

Device (CCD)

Usually refer to image compression or sound file compression.

Image compression: A process that alters the way digital image data are

compression encoded in order to reduce the size of an image file.

Sound file compression: A process of altering the sound data coding in order to reduce the size of a sound file in the electronic still picture camera.

A transport-provided logical or physical persistent mechanism for transferring

connection

data between devices.

A standardized ASCII file created in a digital camera and stored on removable Digital Print Order media along with the image files that indicate how many copies of which images

Format (DPOF) should be printed. It also allows index prints, cropping, and text overlays to be specified.

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