Olympus EVOLT E-300 - Manual (Page 187)

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Appendix
Glossary
Compression rate
Compression is a method of reducing file size by abbreviating some contents of
data, and compression rate denotes the amount of compression. The actual effect
of the selected compression rate could vary with the content of the image. The
numbers for the compression rate selected with this camera provide only a
general scale for reference and are not precise measurements.
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).
Depth of Field
Depth of Field refers to the distance from the nearest to the furthest point of
perceived "sharp" focus in a picture.
Digital ESP (Electro-Selective Pattern) Light Metering
This determines the exposure by metering and calculating the light levels in the
center and other areas of the image separately.
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.
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 settings.
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