Similar to a top hat, except with a colorframe holder at the far end. Moving the color media away from the lens extends the life of saturated colors. Link to one manufacturer.
Link to an article about building one's own, which appeared in the March 2008 issue of Lighting&SoundAmerica.
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Link to an article about building one's own, which appeared in the March 2008 issue of Lighting&SoundAmerica.
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