Operation Manual

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 disks.
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.
rating In Aperture, the process of adding a value to an image to indicate its quality in
relation to other images in a selection. See also photo edit, Reject rating, Select rating.
RAW The original bit-for-bit digital image file captured by the camera. See also RAW+JPEG
image pair.
RAW Fine Tuning adjustment A set of adjustment parameters in Aperture used to control
how Aperture decodes RAW image files. See also moire pattern.
RAW+JPEG image pair An image captured by a professional digital camera and saved
as both an individual RAW file and an individual JPEG file. You can set Aperture to import
one file type or both file types in the pair. See also JPEG, RAW.
reciprocity The relationship between the aperture and the shutter that allows for correct
exposures as a result of multiple shutter speed and aperture setting combinations. An
increase in aperture and a decrease in shutter speed creates the same exposure as the
previous aperture and shutter combination, and vice versa. See also aperture, shutter.
Recovery parameter An Exposure adjustment parameter in Aperture used to recover
highlight detail. See also Exposure adjustment.
red-eye The phenomenon that gives people glowing red eyes in photographs. Red-eye
is caused by the close proximity of the flash to the lens (especially built-in flash). See also
external flash, Red Eye Correction adjustment.
Red Eye Correction adjustment An adjustment in Aperture that replaces red pixels with
black, eliminating the red-eye effect. Used in conjunction with the Red Eye tool. See also
adjustment, pixel, red-eye.
899Glossary