Effects > Distort > Spherize
Spherize
The Spherize filter allows you to give your image a 3D effect by wrapping it around a spherical shape.
1. Do one of the following:
 Choose Effects > Distort > Spherize
 
Click the Spherize button
2. Use the following options:
  Degree
Try different settings until you are satisfied with the effect.

Min = 0, Max = 100, Default = 1.
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