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Glossary of terms
Misc
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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.
Effective Pixel Resolution
The number of pixels used in the CCD to create 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.
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).
Flash Bracket
A mount used to attach an external flash to the camera. Shadows on the
subject can be changed by detaching the flash. The flash is used in
combination with the flash cable.
Gross Pixel Resolution
The total number of pixels in a CCD. Not all pixels are used to create the
image.
ISO
A method for indicating film speed by the International Organization for
Standardization (ISO) (e.g. “ISO100”). Higher ISO values indicate greater
sensitivity to light, so images can be exposed even in low-light conditions.