Apple MB673Z/A User Manual - Page 662

project In Aperture, the top-level container that holds all the masters, versions, and metadata associated with your shoot. In the case of referenced images, the masters are stored in their current location rather than in the project file. See also album, folder, library, master, referenced images, version. promote The process of moving an image in a stack closer to the pick position. See also demote, Full Screen view toolbar, image, pick, stack. PSD Short for Photoshop Document. PSD files are proprietary graphics files for Adobe Systems Incorporated. See also format. pupil The part of the eye that contracts and expands depending on the amount of light; also known as the iris. quantization The process of converting a value derived from an analog source to a discrete digital value. See also digitization. Query HUD A floating window used to quickly locate images based on a combination of criteria, such as adjustments, keywords, ratings, and EXIF metadata, and to specify image criteria for the contents of Smart Albums. See also EXIF, image, keywords, rating, Smart Album. QuickTime A cross-platform multimedia technology developed by Apple. Widely used for editing, compositing, web video, and more. RA-4 A type of professional printer capable of printing digital files on traditional photographic paper. RA-4 printers use a series of colored lights to expose the paper; the colors blend together to produce continuous-tone prints. See also dye sublimation, inkjet printer, photo printer, print. RAID Short for Redundant Array of Independent Disks. A method of providing photographers who have large image libraries many gigabytes of high-performance data storage by formatting a group of hard disks to act as a single drive volume. The performance of a group of hard disks striped together as a RAID can be much higher than that of the individual drives. RAM Short for random-access memory. A computer's memory capacity, measured in megabytes (MB) or gigabytes (GB), which determines the amount of data the computer can process and temporarily store at any moment. rangefinder An apparatus found on many cameras that is used to help focus the image. See also camera, viewfinder. raster image processor (RIP) A specialized printer driver that replaces the driver that comes with your printer. It takes input from applications and converts, or rasterizes, the information to data that the printer understands so that it can put dots on a page. Software RIPs typically offer features not found in standard printer drivers. 662 Glossary