Apple Aperture 1.5 (New Features) - Manual (Page 6)

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Working with the Color Controls
In Aperture 1.5, you can now selectively adjust the red, green, blue, cyan, magenta, and
yellow colors in an image using the Color controls in the Adjustments Inspector or
Adjustments HUD. Each color has individual hue, saturation, and luminance controls. In
addition, Aperture provides a Range control used to set the extent of color affected by
the hue, saturation, and luminance adjustments, also known as
chromatic spread. You
use the Range control to fine-tune your color adjustments.
Working with the Edge Sharpen Controls
Aperture 1.5 provides a new Edge Sharpen adjustment that gives you greater control
over the sharpening of images. The Edge Sharpen controls adjust the luminance values
in the image, increasing the contrast between light and dark pixels that touch, creating
an “edge.” Increasing the contrast between these neighboring light and dark pixels
gives the image a crisper, or sharper, appearance. Images shot with digital image
sensors are often a bit soft in focus because of the demosaic filter applied by the
camera’s processor. You also use the Edge Sharpen controls when you make noise-
reduction adjustments, so that the image retains detail and crisp edges that might
otherwise be obscured by the effect of the noise-reduction adjustment.
Working with the Adjustments and Metadata Inspectors
In Aperture 1.5, you can now work with the Adjustments and Metadata Inspectors one at
a time in the Inspectors panel. For example, when applying adjustments to images, you
can keep the Metadata Inspector hidden and use the entire Inspectors panel to view and
work with the adjustment controls. You can also continue to split the Inspectors panel,
viewing both the Adjustments and Metadata Inspectors at the same time.
Automatic Updating of the Keywords HUD
The Keywords HUD provides a versatile way to apply keywords to images. The Keywords
HUD is now updated automatically with any keywords you add. For example, when you
enter a new keyword in the Metadata Inspector, that keyword also appears in the
Keywords HUD. When you change a keyword, for example, by changing its spelling or
capitalization, the keyword is updated on all images that have that keyword assigned. In
addition, the Keywords HUD can be locked to prevent unintended changes.