- Ambient Light
- The natural light in a scene.
- The maximum size of the hole through which light
enters the camera.
- Unwanted distortions in an image caused by image
- Aspect Ratio
- The ratio between the width and height of an
- The smallest unit of computer memory.
- A method of storing information that maps an image
pixel bit by bit.
- A group of 8 bits, the basic unit of information
for the computer.
- Chromatic Aberration
- A fringing effect around the edges, which is caused
by the lens not focusing correctly.
- Color Depth
- The number of bits assigned to each pixel in the
image and the number of colors that can be created
from those bits.
- Depth of Field
- The distance between the nearest and farthest points
that appear in sharp focus in a photograph.
- Digital Zoom
- A digital magnification of the center 50% of an image.
Digital zooms increase the apparent image size by
interpolation. They do not increase the amount of
- Dots per Inch. A measurement of the resolution of a
digital photo or digital camera. The higher the number,
the greater the resolution.
- Exchangeable Image File. This file format embeds camera
and exposure information into the graphic file created
by the camera.
- The length of time that the lens is open, allowing light
to fall on the camera's image sensor.
- A numerical designation indicating the size of the
- Flash Mode
- The camera mode that determines how the internal flash is used
in the photo.
- Focal Length
- The distance from a point where an image is formed (the
focal point) to a point in or near the camera lens.