Radial Blur settings
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 verti-
cal 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.
Zoom Blur settings
Span Sets the depth, (length) of the zoom effect. Type a number
from 1 to 100 or drag the slider to set the value. A larger number sim-
ulates a greater zoom depth and a more blurred effect.