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- 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 compression.
- Aspect Ratio
- The ratio between the width and height of an image.
- 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
- 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 image information.
- 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 aperture.
- 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.
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