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| Tally Light | A small light on a video camera which turns on when recording is in progress. In multi-camera situations; a light on a camera, or in it's viewfinder, which turns on when the camera is switched on-line or live. |
| Tele | (Prefix) Producing images or other results from a distance |
| Telecast | Material broadcast by television. |
| Telecine | The process (or equipment used in the process) of transferring film to video and/or television |
| Telephoto | Telephotographic. |
| Telephotographic Lens | Magnifying lens, or combination of lenses |
| Teleprompter | Device which scrolls text on a screen, to provide cues for a television/video presenter |
| Televise | To transmit by television. |
| Television | : Literally, vision at a distance. The transmission, reception, and reproduction of moving pictures and audio. Refers to both the process in general, and the receiving appliance. |
| Tele-zoom | Longer zoom, producing greater magnification. |
| Test Pattern | Pattern of colors, lines and/or shapes designed to assist equipment calibration |
| Tilt | Vertical camera movement, i.e. adjusting the framing up and down |
| Time Base Corrector | : A device which adjusts, improves and corrects defects in a video signal. Can be used to synchronise different vision sources before being mixed together, to avoid picture disturbances when cutting from one source to another. |
| Tone | An audio test signal. Used to set signal levels, test signal quality, identify signal pathways, etc |
| Transducer | A device which coverts energy from one form into another. For example, a microphone is a transducer which converts acoustical energy into electrical energy. |
| Transistor | A device used for switching or amplifying. |
| Transmitter | : A device which converts video, audio and/or data signals into modulated radio frequency signals, and transmits them as radio waves |
| Tripod | A three-legged stand for mounting equipment such as a camera, etc. |
