A funny name for a funny thing. A cucoloris is often just refered to as a cookie, or sometimes a gobo. Many times when out on a shoot we would pull out our cookie and get these strange looks. “Do you have a problem with termites” they ask?
The cookie is mounted on a stand and placed between a light and a background to breakup the light and create a natural pattern. Most people think you are crazy until they see the effect which looks surprisingly natural.
And here is a bit of proof. This photo shows the action of real tree branches and leaves on the sunlight falling on my back porch shade. And it does look like a cucoloris.