User Guide

Canvas 12 User Guide
Editing with Paint tools Finished alpha channel Isolated subject
Maximizing and minimizing bright areas in an image
Increase or decrease light areas in an image with the Maximum and Minimum filters. The Maximum
filter adds light to shadows. The Minimum filter shrinks light areas.
To apply a choke or spread to an image manually, use the Maximum or Minimum filters in a
color channel.
When you apply these filters, Canvas compares each pixel to its neighbors within the radius you
specify, then replaces it with the lightest or darkest pixel in the group. This command doesn’t work
with paint objects in Black & White mode, and Indexed mode.
To use the Minimum and Maximum filters:
1. Select one or more paint objects to adjust all the images. You can select an area in one image
in edit mode to adjust the selected area only. If you don’t make a selection, the entire image
in edit mode is affected.
2. Choose Image | Filter | Other | Maximum and enter a radius from 1 to 16 pixels to maximize
the light areas in an image.
3. Choose Image | Filter | Other | Minimum and enter a radius from 1 to 16 pixels to minimize
the light areas in an image.
4. Select Preview to check the settings and then click OK.
Original Maximum 6 pixels Minimum 6 pixels
540