Olympus Stylus 800 Digital - Manual (Page 144)

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Appendix
Glossary of terms
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 best exposure.
AE (Automatic Exposure)
The camera automatically sets the exposure. The 3 AE modes available on this
camera are
K (Program auto) 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.
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. Larger aperture values indicate smaller apertures, and smaller
aperture values indicate larger apertures.
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.
Eclipsing (Vignetting)
This refers to when an object obscures part of the field of view so that the whole
subject is not photographed. Vignetting also refers to when the image seen through
the viewfinder does not exactly match the image shot through the objective lens, so
the photographed image includes objects not seen through the viewfinder. In
addition, vignetting can occur when an incorrect lens hood is used, causing
shadowing to appear in the corners of the image.
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.