Term used to describe a complete set of gels preloaded into gel frames ready to be inserted into a lighting instruments, such as a CTO and diffusion for a stage wash

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Proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source ..

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A union union embracing the development of new entertainment mediums, craft expansion, technological innovation and geographic growth representing virtually all the behind-the-scenes workers in crafts ranging from motion picture animator to theater usher.

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Triangular frames attached to back of flats, usually with hinges. May the be anchored to floor by a hinge, by screwing through into a wooden cleat fastened to the floor, or with a weight (as a stage weight or closed sandbag) placed on jack to counterbalance weight of the flat.

The first and usually most important light that a photographer, cinematographer, lighting cameraman, or other scene composer will use in a lighting setup. The purpose is to highlight the form and dimension of the subject.

The workhorse of the stage lighting world of fixtures. With this versatile instrument, you can get many different uses from one single fixture. You can control the size, shape, texture, edge, color and intensity of the beam of light.

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They are perpendicular cross-hatches of pipe attached to the overhead structure above a stage, or studio. It is a standard way to mount scenery and lighting instruments.