Altman F7-BD8 8-Leaf Barn Door Set for 7-Inch Fresnels 100790269 "Calibration factors have been developed

"Calibration factors have been developed and approved by the Actors’ Equity Association and the Broadway League for use in measuring theatrical fog with the JEM Glaciator and JEM Low-Fog Fluid

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100-240V 50Hz/60Hz (Auto Sensing)

Color Temperature (range): 2800 to 8000 K

Coverage Pattern: 100 x 15 nominal

Altman F7-BD8 8-Leaf Barn Door Set for 7-Inch Fresnels 100790269 "Calibration factors have been developedAltman F7 BD8 8 Leaf Barn Door Set for 7 Inch Fresnels Use of a barndoor set will result in a shaft of light when it is attached to the front of the reflector of your light source. The size of the shaft of light will be determined by the opening of the leaves, and the distance of the light from the subject. Rotating the barndoor set will determine the angle of the shaft of light.