Pentax K20D - Digital Camera SLR, Operating Manual

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CMOS Sensor
Photography element which converts the light entering through the lens
into electric signals that create the image.
Color Space
A defined range of colors from the spectrum which are used. In digital
cameras, [sRGB] is defined as the standard by Exif. In this camera,
[AdobeRGB] is also used because of the richer color expression over
sRGB.
Color Temperature
This numerically expresses the color of the light source illuminating the
subject. This is indicated in absolute temperature, using Kelvin (K) units.
The color of light shifts to a bluish color as the color temperature rises, and
to a reddish color as the color temperature falls.
Dark Portion
Underexposed area in the image loses contrast and appears black.
DCF (Design Rule for Camera File System)
A digital camera file system standard established by the Japan Electronics
and Information Technology Industries Association (JEITA).
Depth of field
Area of focus. This depends on the aperture, lens focal length, and
distance to the subject. For example, select a smaller aperture (higher
number) to increase the depth of field or use a larger aperture (smaller
number) to decrease the depth of field.
DNG RAW file
DNG (Digital Negative) is a general-purpose RAW file format designed by
Adobe Systems. When images captured in proprietary RAW formats are
converted to DNG format, support and compatibility for the images
increases significantly.
DPOF (Digital Print Order Format)
Rules for writing information onto a card with recorded images regarding
the specific images and number of copies to be printed. Prints can easily
be made by taking images to a DPOF photo printing store.
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