Apple Aperture 2 - Manual (Page 661)

Glossary 661
PNG Short for Portable Network Graphics. PNG is a bitmapped graphics file format that
has been approved by the World Wide Web Consortium to replace patented GIF files.
PNG files are patent and royalty free. See also
format .
polarizing filter A filter placed on the front of the camera lens that selectively
transmits light traveling on one plane while absorbing light traveling on other planes.
Polarizing filters are capable of reducing unwanted reflections on windows and shiny
surfaces. Polarizing filters are also used to darken the sky. See also
filters .
positive Developed film where the tonal relationship of the subject or scene is the
same on film as viewed by the eye; also known as a slide. See also
dust and scratch
removal , emulsion , negative .
presets A saved group of settings, such as export, naming, print, and web export
settings. Presets determine properties such as file format, file compression, filename
construction, paper size, and ColorSync profile. Presets are usually defined for particular
workflows and can be tailored to client specifications. See also
ColorSync .
preview images JPEG images generated by Aperture that represent the original
master with any applied adjustments and associated metadata. Preview images are
designed to be shared with other applications, such as iWeb, and used in place of the
masters when they are offline. See also
adjustment , JPEG , metadata , offline .
primary selection The most important image in an image selection. Adjustments are
applied only to the primary selection in an image selection. The primary selection is
identified by a thicker white border. There can only be one primary selection in an
image selection. See also
adjustment , image selection , Primary setting .
Primary setting A Viewer setting in Aperture that limits metadata changes to only the
primary selection in a multiple-image selection. See also
filmstrip , image selection ,
metadata , primary selection .
prime lens A lens with a fixed focal length that cannot be changed.
print An image printed on paper; also known as a photograph. See also dye
sublimation , inkjet printer , RA-4 .
profile A compilation of data on a specific device’s color information, including its
gamut, color space, and modes of operation. A profile represents a device’s color-
reproduction capabilities and is essential to effective color management. See also
device characterization , gamut .
program exposure An exposure mode on many automatic cameras in which the camera
automatically sets the aperture and shutter values for a correct exposure. See also
exposure .