Glossary

Handle:
An extra number of frames attached to the head and tail of an optical print as a safety precaution. (Laboratory)
Harmonic Distortion:
Acoustic distortion characterized by unwanted changes between input and output at a given frequency. (acoustics)
Hertz (Hz):
Unit for measuring frequency of d signal; formerly called "cycles per second."
Highboy:
A heavy-duty rolling stand, usually with a combo head, that has a junior receiver and a large grip head. also called Overhead Stands. (Grip/Lighting)
Highkey:
An overall brightly lit scene with relatively few shadows. (Lighting)
High-Pass Filter:
An electronic filter used in various audio circuits to attenuate all frequencies below a chosen frequency.
Hiss:
Asperity Noise. Noise caused by minute imperfections in the recording medium (tape). (Sound)
HMI:
An enclosed, aC mercury arc lamp. (Lighting)
Incoming Scene:
The second scene to appear in a dissolve or wipe effect.
Inductance:
The resistance of a coil of wire to rapidly fluctuating currents which increases with frequency. (acoustics)
Inkie:
A small (250 watt) fresnel type light. (Lighting)
Insert Editing:
Used in videotape or digital audio editing to describe the process of replacing a segment located between two specific and previously dubbed segments.
Interactive Presentation:
An interactive presenation, whether video, Flash® or CD interface, allows the user to adjust variables in order to obtain different results.
Intercutting:
An editing method whereby related shots are inserted into a series of other shots for the purpose of contrast or for some other effect. (Film Editing)
Interlock:
A term that generically refers to two or more machines running in synchronization; often shortened to "locked."
Invisible Cut:
A cut made during the movement of a performer which is achieved by overlapping the action or by using two cameras, then matching the action during editing. (Film Editing)
Iris:
A variable aperture that controls exposure or the amount of light which is released from a lighting unit. (Camera/Lighting)
Japanese or Chinese Lantern:
A paper-covered wire frame globe into which a socket and bulb may be placed. (Lighting)
Jib arm:
A mechanical are which is supported on a dolly, tripod, or other device, which is counter-weighted to hold a camera for an increased range of motion. (Production)
Juicer:
An electrician.
Jump-Cut:
An editorial device where the action is noticeably advanced in time, either accidentally or for the purpose of creating an effect on the viewer. (Film Editing)