A Closer Look at the Feedback Effect
February 12, 2001
Selections don't necessarily have to follow the outline of a
subject; some interesting effects can be produced by selecting
a whole section of an image with the oval or rectangular
selection tool, and then inverting that selection to apply the
effect to the areas not originally selected.
For this example I used the Selection tool with the following
settings:
- Selection type: Ellipse
- Feather: 30
- Antialias: checked
I then inverted that selection and applied the feedback effect.
[Effects > Reflection > Feedback] with the following
settings:
- Opacity: 36
- Intensity: 100
- Horizontal Center: 100
- Vertical Center: 0
- Elliptical: unchecked
As with other effects in PSP7, the Feedback effect may be applied
to greyscale and 24-bit color images. As promised, lets take a
closer look at the options in the dialog box.
The Opacity determines the strength of the effect. The higher the
number the less of the original image is displayed and more of the
effect.
Specify the number of times the image will be repeated with the
Intensity slider. Either drag the slider or type the number
in the box.
The Horizontal slider controls the feedback's
horizontal center and is calculated as a percentage of the image's
width. To position the feedback center at the center of the image type
50 in the box. Increasing the value moves the feedback center to the
right, decreasing it moves the center left.
The Vertical slider controls the feedback's
vertical center and is calculated as a percentage of the image's
height. To position the feedback center at the center of the image type
50 in the box. Increasing the value moves the feedback center to the
bottom, decreasing it moves the center up.
Finally, there is a checkbox marked "Elliptical". When checked the
feedback will be oval in shape, when unchecked it is rectangular.
Selective Effects
Getting the Most From Your Effects
Conclusion
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