I found this great photoshop tutorial that I wanted to share. Take a look at how easy it is to make digital gobos in your next image!
Using Photoshop to Create Digital Gobos
by Mark S. Johnson Photography (msjphotography.com)
A gobo is a physical template made from glass, metal, or plastic that can be slipped inside (or placed in front of) a light source to produce a bright or dark shape, such as simulated window light or a tree’s shadow. During the 1930s, gobos were used regularly in Hollywood to add dramatic mood lighting to memorable shots in black-and-white films. In today’s tutorial, we’ll create a simple, but elegant, window-shaped gobo.