Operation Manual

flag A type of metadata assigned in Aperture used to help filter images. You can flag
images and then search for and display images in Aperture based on whether they are
flagged or not. See also Flagged view, metadata.
Flagged view An Aperture view that displays all images, audio clips, and video clips in
the library that have been flagged. See also Faces view, flag, Photos view, Places view,
Projects view.
flash A device either on or attached to the camera that emits a brief, intense burst of
light when the shutter release button is pressed. Flashes, synchronized with the shutter,
are used to obtain a correctly exposed image in low-light situations. See also exposure,
external flash, fill-in lighting, hot shoe.
flat The lack of density in an image when the contrast is too low. See also contrast, density.
Flip adjustment An adjustment in Aperture that inverts the composition of the image
horizontally, vertically, or both. See also adjustment.
focal length The distance from the rear nodal point of the lens to the point where the
light rays passing through the lens are focused onto the image plane—the digital image
sensor. Focal lengths are measured in millimeters (mm).
focus point overlays See autofocus point overlays.
folder A type of container in the Aperture library used to organize projects and albums
within projects. Folders do not contain images. See also album, library, project.
foreground The area of the image between the subject and the camera. See also
background, depth of field.
format a. File format: A specific method of encoding information. Most well-known file
formats, such as TIFF and PNG, have published specifications. b. Disk formatting: The
preparation of a hard disk or other storage medium for use with a file system. For example,
disk drives used with Mac OS X use the Mac OS Extended format. See also JPEG, PNG,
PSD, TIFF, vault.
frame The border of an image. Frame can also be used as a verb to describe the process
of constructing a composition within a specific image area. See also crop.
frontlighting A light source, emanating from the direction of the camera, that faces
toward the subject. See also backlighting, sidelighting.
f-stop The ratio of the focal length of the lens to the diameter of the opening of the
aperture. See also aperture.
888 Glossary