To change the viewpoint setting
1
Drag the lens around the document, seeing how the view of the
lens changes as it moves.
2
Select the Absolute radio button in the Lens area.
3
Drag the lens around the document once more. The image
within the lens has now fixed on the original position of the lens.
To add other SpriteEffects to lenses
1
From the SpriteEffects palette, click the New Effect button
2
Choose Noise > Add Noise, and click OK.
3
Select a Noise Amount of 50. Make sure Uniform is
selected, Monochromatic is deselected. Click OK.