Olympus evolt e-500 入門マニュアル

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Glossary
A (Aperture Priority) Mode
You set the aperture yourself and the camera automatically varies the shutter 
speed so that the picture is taken with the correct exposure.
AE (Automatic Exposure)
The camera's built-in exposure meter automatically sets the exposure. The 3 
AE modes available on this camera are P mode, in which the camera selects 
both the aperture and shutter speed, A mode, in which the user selects the 
aperture and the camera sets the shutter speed, and S mode, in which the 
user selects the shutter speed and the camera sets the aperture.
In M mode, the user selects both the aperture and the shutter speed.
Aperture
The adjustable lens opening which controls the amount of light that enters the 
camera. The larger the aperture, the shorter the depth of field and the fuzzier 
the background. The smaller the aperture, the greater the depth of field and 
the sharper the background. Aperture is measured in f/stops. Larger aperture 
values indicate smaller apertures, and smaller aperture values indicate larger 
apertures.
AUTO mode
Program AE mode (see “P (Program) Mode”). In addition, this mode features 
automatic flash pop up when shooting in low-light conditions.
CCD (Charge-Coupled Device)
This converts light passing through the lens into electrical signals. On this 
camera, light is picked up and converted into RGB signals to build a single 
image.
Center weighted averaging metering
A light metering mode or technique that uses an average of the center and 
periphery of the image area but is biased toward the information at the center 
of the image area. This method is best used when the brightness of the center 
and periphery of the image area does not vary greatly. See also digital ESP 
metering and spot metering.
Color space
A model that describes colors using more than three coordinates. Color 
spaces such as sRGB, Adobe RGB are occasionally used for encoding/
reproducing colors.