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Explanation of Terms
DPOF:
Digital Print Order Format
DPOF is a format used for recording information on
a storage media (image memory card, etc.) that
allows you to specify which of the frames shot using
a digital camera are printed and how many prints
are made of each image.
EV:
A number that denotes Exposure Value. The EV is
determined by the brightness of the subject and
sensitivity (speed) of the film or CCD. The number
is larger for bright subjects and smaller for dark
subjects. As the brightness of the subject changes,
a digital camera maintains the amount of light
hitting the CCD at a constant level by adjusting the
aperture and shutter speed.
When the amount of light striking the CCD doubles,
the EV increases by 1. Likewise, when the light is
halved, the EV decreases by 1.
JPEG:
Joint Photographics Experts Group
A file format used for compressing and saving color
images. The compression ratio can be selected, but
the higher the compression ratio, the poorer the
quality of the expanded image.
Motion JPEG:
A type of AVI (Audio Video Interleave) file format
that handles images and sound as a single file.
Images in the file are recorded in JPEG format.
Motion JPEG can be played back by QuickTime 3.0
or later.
MP3:
An acronym for MPEG1 Audio Layer 3. Denotes an
audio compression format included in the MPEG
video and audio compression standard. The MP3
format compresses audio data to approximately
1/10 of its original size by excluding all audio
information that is not audible to humans.
PC Card:
A generic term for cards that meet the PC Card
Standard.
PC Card Standard:
A standard for PC cards determined by the
PCMCIA.
PCMCIA:
Personal Computer Memory Card International
Association (US).
PNG:
An acronym for Portable Network Graphic.
As the name suggests, this is an image format
created to facilitate the handling of image data over
networks and has emerged as the new replacement
for the GIF format. As such, it has many of the GIF
format characteristics (optimized for graphics,
compact file sizes and lossless compression) but
does not have the limitations of the GIF format,
such as being restricted to 256 colors.
VGA:
A graphics standard for personal computers that
indicates an image size of 640×480 pixels.
WAVE:
A standard format used on Windows systems for
saving audio data. WAVE files have the “.WAV” file
extension and the data can be saved in either
compressed or uncompressed format. This camera
use PCM recording.
WAVE files can be played back on a personal
computer using the following software:
Windows : MediaPlayer
Macintosh: QuickTime Player
✽ QuickTime 3.0 or later
White Balance:
Whatever the kind of the light, the human eye
adapts to it so that a white object still looks white.
On the other hand, devices such as digital cameras
see a white subject as white by first adjusting the
color balance to suit the color of the ambient light
around the subject. This adjustment is called
matching the white balance. A function that
automatically matches the white balance is called
an Automatic White Balance function.