Apple Aperture 3.5 - Manual (Page 521)

Glossary 521
Repair brush A type of Retouch brush in Aperture used to correct and obscure imperfections
in an image by copying pixels from a similar-looking area of an image and pasting them over
the area with the pixels you want to replace. In addition to overwriting the pixels, the Repair
brush resamples the pasted pixels to match the color, texture, and luminance of the pixels you
replaced. See also Clone brush, Retouch adjustment, retouching.
resolution The amount of information a digital image is capable of conveying. Resolution is
determined by the combination of file size (number of pixels), bit depth (pixel depth), and dots
per inch (dpi). See also bit depth, dots per inch (dpi), pixel.
Retouch adjustment In Aperture, an adjustment used to correct or obscure imperfections in an
image. Used in conjunction with the Retouch HUD, which provides a Clone brush and a Repair
brush. See also adjustment, Clone brush, Repair brush.
retouching The process of altering an image to add or remove details. See also Clone brush,
compositing, effects, filters, Repair brush, Retouch adjustment.
RGB Short for Red, Green, Blue. A color space commonly used on computers, in which each color
is described by the strength of its red, green, and blue components. This color space directly
translates to the red, green, and blue elements used in computer displays. The RGB color space
has a very large gamut, meaning it can reproduce a wide range of colors. This range is typically
larger than the range that printers can reproduce. See also additive color.
rods A type of receptor in the eye capable of perceiving luminance. Rods do not perceive color,
but only levels of brightness. See also cones.
saturation The intensity of color in an image. Saturated colors are perceived to have a “purer”
look, resulting from the absence of the color gray. See also adjustment, desaturate.
Saturation parameter An Enhance adjustment parameter in Aperture used to adjust saturation
in an image. See also adjustment, desaturate, Enhance adjustment, saturation.
Saturation Quick Brush A type of Quick Brush adjustment that adds saturation to or removes it
from the area of the image the adjustment is brushed on. See also adjustment, Brush HUD, Quick
Brushes, saturation.
secondary Viewer The secondary Viewer is used to present photos on a second display, separate
from the application workspace. The secondary Viewer has five settings: Mirror, Alternate, Span,
Black, and Off. See also Alternate setting, Black setting, display, main Viewer, Mirror setting, Off
setting, Span setting.
selective focus The process of isolating a subject by using an f-stop that produces a shallow
depth of field. See also depth of field.
Select rating In Aperture, the highest rating that can be applied to a photo as part of the photo
editing process. A Select rating is applied when you intend to display or distribute the photo. See
also photo edit, rating, Reject rating.
sepia Describes a photograph with a brown tint. See also photograph, Sepia Tone adjustment,
Tint adjustment.
Sepia Tone adjustment An adjustment in Aperture that changes a color image to sepia—
allowing you to desaturate the color image to the level of sepia coloring you want. See also
adjustment, desaturate, image, sepia, Tint adjustment.
shadows The darkest areas of a subject or scene. See also contrast, density, highlights.
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