K:
Kelvin, the unit of measurement used for absolute temperatures and color temperatures.
KEM:
A brand name for a common 'flatbed' film editing machine. (Film Editing)
Key Grip:
The chief grip who works directly with the gaffer in creating shadow effects for set lighting and who supervises camera cranes, dollies and other platforms or supporting structures according to the requirements of the director of photography. (Production)
Key Light:
The main light on a subject. (Lighting)
Key Numbers:
Numbers placed on the edge of the film stock by the manufacturer as a unique identification point (35mm - every 16 frames: 16mm - every 20 frames). (Film Editing)
Kick:
An object with a shine or reflection on it from another object. (Grip/Lighting)
Kiss:
A light that gently brushes a subject. (Lighting)