Pentax K-X - Manual (Page 307)

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JPEG
An image compression method. In this camera, select from C (Best),
D
(Better), or E (Good). Images recorded in JPEG format are suited for
viewing on your computer or for attaching to e-mail.
ND (Neutral Density) Filter
A filter available in different saturation levels that adjusts the brightness
without affecting the color tone of pictures.
Noise Reduction
Process to reduce noise (image roughness or unevenness) caused by
slow shutter speed or high sensitivity shooting.
NTSC/PAL
These are video output formats. NTSC is mainly used in Japan, North
America, and South Korea. PAL is mainly used in Europe and in China.
Quality Level
This refers to the image compression ratio. The lower the compression,
the more detailed the image. The image becomes rougher as the
compression rate rises.
RAW data
Unedited image data output from the CMOS sensor. RAW data are data
before being internally processed by the camera. Camera settings at the
time of capture, such as White Balance, Contrast, Saturation, and
Sharpness can be set for each frame after shooting. In addition, RAW data
are 12 bit data that contain 16 times the information of 8 bit JPEG data.
Rich gradations are possible. Transfer RAW data to your computer and
use the provided software to create image data with different settings,
such as JPEG.
Recorded Pixels
Indicates the size of the image by the number of pixels. The more pixels
that compose a picture, the larger the image size.
Shutter Speed
The length of time that the shutter is open and light strikes the CMOS
sensor. The amount of light that strikes the CMOS sensor can be changed
by altering the shutter speed.