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April 28, 2004 Glossary-1
Glossary
AE (Automatic Exposure) By using a built-in exposure meter, the camera determines the correct
exposure value, which is combinations of shutter speed and/or aperture
value.
AE (Automatic Exposure)
lock
The camera fixes and memorizes the exposure value with AE lock. For
example, if a photographic subject is placed in the center and exposure
value of the composition is fixed, the brightness of the background will not
influence the exposure, even if the composition changes and the subject is
moved from the center of a screen. (Use the AE lock button.)
AF (Auto Focus) Using a built-in sensor, the camera adjusts the focusing automatically.
AF Lock In AF mode, you can lock the focus on the main subject. For example,
compose the desired subject in the center of the viewfinder. With the focus
locked at the same setting, you can re-compose the picture with the subject
off-center and capture images.(Press the Shutter button half-way to use this
feature.)
Aperture The lens opening of the iris diaphragm inside the lens. The amount of light,
which strikes the image sensor, is adjusted by the iris diaphragm. The
f-number (focal length/diameter of the aperture) indicates the size of this
opening. The aperture size can be made larger or smaller. A large aperture
(low f-number) gives bright results and a small aperture (high f-number)
gives darker results.
Auto Power-Off For saving the battery power, your camera automatically turns off if you do
not touch any camera controls.
CMOS Complementary Metal Oxide Semiconductor (CMOS) can perform signal
amplification on a per-pixel basis. Significant current flows only during the
switching operation. Therefore a CMOS image sensor can scan data rapidly,
sustain high-speed operation and consume less energy.
Color temperature The numerical expression of the tone of the light, produced by a light
source. The standard unit for color temperature is degrees Kelvin (K). Low
color temperature implies warmer, more yellow/red light while high color
temperature implies a colder, more blue light. The typical color
temperature of tungsten light is 3200 K, a personal computer is 9300 K.