Olympus D-630 Zoom - Manual (Page 119)

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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.
Conventional Photograph
This refers to recording images using silver halide (the method for recording images
in conventional, non-digital photography). This system is in contrast to still video and
digital photography.
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.
EV (Exposure Value)
A system for measuring exposure. EV0 is when the aperture is at F1 and the shutter
speed is 1 second. The EV then increases by 1 each time the aperture increases by
one F stop or the shutter speed increases by one increment. EV can also be used to
indicate brightness and ISO.
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.
ISO
A method for indicating film speed by the International Organization for
Standardization (ISO) (ex. “ISO100”). Higher ISO values indicate greater sensitivity
to light, so images can be exposed even in low-light conditions.
JPEG (Joint Photographic Experts Group)
A compression format for still images. Photographs (images) shot using this camera
are recorded 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.