CHAPTER
34
IMAGE ADJUSTMENT AND
CORRECTION
You can adjust images in Canvas using built-in filters and third-party
plug-ins. For example, you can use the Levels filter to adjust image
highlights and shadows, and sharpen scanned photos with the
Unsharp Mask filter.
This chapter describes the commands you can use to adjust image
color and brightness. It also describes commands for sharpening,
softening, and refining images.
Applying image-editing commands
You can apply most image-editing commands to a single paint object
if its selected or in edit mode.You can also apply most commands to
multiple selected paint objects. You can set image modes, apply fil-
ters, and adjust settings for multiple paint objects at the same time.
In most cases, a command affects an active selection, or an entire
image if nothing is selected in edit mode.
Note: When you apply an image-editing command to more than one
selected paint object, you cant use the Preview option if the dialog
box has it. Preview is available when a single image is in edit mode.
The following summarizes how image-editing commands can be
applied.
Mode commands let you set the image mode for one or more
selected paint objects.
You can convert multiple objects to image proxies.
The Crop command and the Proxy Info command cant be
applied to multiple objects.
The Resolution command sets the resolution for one or more
selected objects.
The Trim command trims one or more selected paint objects.
You can apply filters to one or more selected paint objects. If
a single paint object is in edit mode, a filter applies to the
entire image or an active selection.