User guide

Chapter 7 Make image adjustments 218
Adjustment Function
Chromatic Aberration Corrects chromatic aberration, produced by certain
lenses during shooting.
Devignette Corrects a vignette created when the image was shot.
Noise Reduction Reduces digital noise in an image.
White Balance Sets an image’s white balance by evaluating the
image for natural gray or skin tone in identied faces,
as well as by adjusting the color temperature and tint.
Exposure Adjusts exposure, recovery, black point, and
brightness.
Enhance Adjusts contrast, denition, saturation, and vibrancy,
as well as black, gray, and white tints.
Curves Selectively remaps the tonal range of the image by
applying a curve from input to output.
Highlights & Shadows Selectively adjusts the exposure in the shadows and
highlights of an image.
Levels Selectively adjusts the tonal range of an image.
Color Adjusts hue, saturation, and luminance on a color-by-
color basis, as well as chromatic range.
Black & White Selectively controls the source red, green, and blue
color channels when a color image is converted to
grayscale.
Color Monochrome Desaturates the image and applies a color tint of your
choosing to the midtones.
Sepia Tone Changes a color image to sepia, allowing you to
desaturate the image to the level of sepia coloring
you want.
Edge Sharpen Sharpens the image based on luminance using
multiple sharpening passes.
A separate Sharpen adjustment is also available to
preserve sharpening adjustments made in earlier
versions of Aperture.
Vignette Applies a vignette eect to the image.
Note: You can also modify how OS X decodes RAW les using the RAW Fine Tuning controls, and
you can modify iPhoto eects for images you’re working with in iPhoto. For more information
about decoding RAW les, see RAW Fine Tuning controls overview on page 334. For more
information about working with iPhoto, see Apply iPhoto eects to images on page 240.
Quick Brush adjustments
You can brush the following Quick Brush adjustments on specic areas of an image. For
instructions, see Apply Quick Brush adjustments on page 231 or the topic for a particular
Quick Brush adjustment.
Quick Brush Function
Skin Smoothing Smoothes people’s skin by subtly blurring wrinkles
and skin pores in brushed areas of an image.
Dodge (Lighten) Dodges (lightens) brushed areas of an image.
Burn (Darken) Burns (darkens) brushed areas of an image.
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