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RAW
Using Adobe Camera Raw, Bridge, and Photoshop
to Get the Most out of Your Digital Camera
Mikkel Aaland
PHOTOSHOP CS2
Photoshop CS2 RAW
BY MIKKEL AALAND
Editor:
Colleen Wheeler
Production Editor:
Philip Dangler
Technical Editors:
Cris Rys and Doug Nelson
Author’s Assistants:
Peter Burian and Ed Schwartz
Cover Design:
Mike Kohnke
Interior Design:
Michael Kavish
Graphic Production:
Jan Martí
Copyright © 2006 Mikkel Aaland. All rights reserved.
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Print History: March 2006, First Edition.
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CHAPTER SEVEN
Reducing Noise, Correcting Chromatic
Aberrations & Controlling Vignetting
With varying degrees, all digital cameras produce images
with electronic noise, chromatic aberrations, and vignetting.
Electronic noise shows up as extraneous pixels sprinkled
throughout an image. Chromatic aberrations appear in
transitional tonal areas as colored halos, color banding,
or purple fringing (especially around backlit edges).
Vignetting—darkening around image edges—occurs with a
filter/lens/sensor mismatch. In this chapter, I’ll cover how you
can reduce the effects of these imperfections in your RAW
files.
Chapter Contents
About Noise
7
Using Camera Raw to Reduce Noise
Using Photoshop’s Reduce Noise Filter
About Chromatic Aberrations
Reducing Chromatic Aberrations with Photoshop’s
Lens Correction Filter
Diminishing or Adding Vignetting
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