ETC Source Four Donut

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Key Features

  • Used to help bring templates into perfect sharpness

 

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Description

Donuts are used in the colour frame slot of an ellipsoidal reflector spotlight to sharpen gobo projections. Similar to the way the human eye sharpens focus when it squints, a donut reduces the aperture and sharpens the output of the fixture. There is some reduction in brightness to achieve this increase in sharpness but this is often a trade off that designers are willing to make.

Additional information

Size

75mm, 63mm, 190mm