User Guide

Canvas 12 User Guide
Radial Blur dialog box
Spin Controls the magnitude of the apparent rotation in the image. Type a
number from 1 to 100 or drag the slider to set the value. Or, drag the
solid area inside the circle. Drag clockwise to simulate slower rotation;
drag counterclockwise to simulate faster rotation and produce more
blurring.
Quality Higher quality creates a smoother image but takes more time. The
quality differences become more pronounced when the image is
enlarged or printed on standard size paper.
Select Draft for the fastest redraw. Select Good for average redraw
speed and quality. Select Best when image quality is most important.
Centering options These options let you set the rotation origin. Center In Image sets the
origin at the center of the image. Center in Selection sets the origin at
the center of a selection. “Offset from Center in Pixels” lets you type
values to offset the origin from the center of the image or selection. Type
vertical and horizontal offset amounts in pixels in the text boxes.
Negative horizontal offsets move the center to the left. Negative vertical
offsets move the center up. Positive horizontal offsets move the center to
the right. Positive vertical offsets move the center down.
Preview Displays the effect of the current settings.
Zoom Blur
The Zoom Blur filter can create the effect of movement in an image, as if the scene were moving
rapidly toward or away from the observer. The filter blurs along an axis perpendicular to the image.
You can specify the depth, direction, and smoothness of the blur effect. This command works with all
image modes except Black & White, Indexed, and Duotone.
To apply zoom blur:
1. Select one or more paint objects to blur. You can select an area in one image to blur the
selected area only.
2. Choose Image | Filter | Blur | Zoom Blur. Adjust the settings in the dialog box, and then click
OK to apply the filter.
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