Operation Manual

Enhance adjustment An adjustment in Aperture that adjusts contrast, definition,

saturation, and vibrancy, as well as black, gray, and white tints in an image. See also

adjustment, contrast, Contrast parameter, definition, Definition parameter, saturation,

Saturation parameter, tint, Tint adjustment, Vibrancy parameter.

evaluative metering A type of metering that operates by dividing the frame into several

small segments, taking a reading from each individual segment, and processing the

average of the total segments to recommend the best exposure value for the overall

image. See also center-weighted metering, light meter, spot metering.

EXIF Short for Exchangeable Image File. The standard format for storing information—such

as shutter speed, aperture, white balance, exposure compensation, metering setting, ISO

setting, date, and time—about how an image was shot. See also IPTC, metadata.

export The process of formatting data in such a way that it can be understood by other

applications. In Aperture, images can be exported in their native RAW format, as well as

in JPEG, TIFF, PNG, and PSD formats. The EXIF and IPTC metadata associated with an

image can be exported as well.

exposure The amount of light in an image. Exposure is controlled by limiting the intensity

of light (controlled by the aperture) and the length of time light comes into contact with

the digital image sensor (controlled by the shutter). Exposure affects the overall brightness

of the image as well as its perceived contrast. See also adjustment, aperture, contrast,

digital image sensor, Exposure adjustment, shutter.

Exposure adjustment An adjustment in Aperture that adjusts exposure, recovery, black

point, and brightness. See also adjustment, Black Point parameter, Brightness parameter,

exposure, Recovery parameter.

exposure meter See light meter.

extended desktop mode A setting in System Preferences that allows the Mac OS X

desktop to span multiple displays. See also display, mirroring.

external editor An application used in tandem with Aperture to perform advanced

adjustments, such as compositing. Aperture creates a new master when an image is sent

to an external editor and automatically retrieves the master when the image is saved.