Olympus C-170 - Manual (Page 102)

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8
Appendix
Glossary of terms
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.
Contrast Detection Method
This is used to measure the distance to the subject. The camera determines if the
image is focused by the level of contrast in the subject.
DCF (Design Rule for Camera File System)
A standard for image files by the Japan Electronics and Information Technology
Industries Association (JEITA).
DPOF (Digital Print Order Format)
This is for saving desired print settings on digital cameras. By entering which images
to print and the number of copies of each, the user can easily have the desired
images printed by a printer or print lab that supports the DPOF format.
ESP (Electro-Selective Pattern) Light Metering/Digital ESP Light
Metering
This determines the exposure by metering and calculating the light levels in the
center and other areas of the image separately.
Exposure
The amount of light used to capture an image. The exposure is determined by the
time the shutter is open (shutter speed) and the amount of light that passes through
the lens (aperture).
Image Size
The size of an image expressed by the number of pixels that make up the image. For
instance, a picture taken with an image size of 640 × 480 fills the computer screen
when the monitor setting is 640 × 480. However, if the monitor setting is
1,024 × 768, the picture only takes up part of the screen.
JPEG (Joint Photographic Experts Group)
A compression format for still images. Pictures taken with this camera are saved in
JPEG format. By downloading these images to a computer, users can edit them
using graphics application software or view the images using an Internet web
browser.
PictBridge
A standard for connecting digital cameras and printers of different makers and
printing out pictures directly.
Pixels
A pixel is the smallest unit (dot) used to make up an image. Clear large-sized printed
images require millions of pixels.