Donuts

$6.25
Donuts
SKU:
2250
Weight:
0.50 LBS
Shipping:
Calculated at Checkout

Donuts are used in the color 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 tradeoff that designers are willing to make.