key grip
US /ˈkiː ɡrɪp/
UK /ˈkiː ɡrɪp/
1.
the chief grip in a film or television production, responsible for the equipment that supports cameras and for setting up the lighting
:
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The key grip ensured all the camera rigging was secure for the complex shot.
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Working as a key grip requires strength, technical skill, and attention to detail.