|Gaffer||Someone who is responsible for the construction of rigging solutions for lighting, usually the chief lighting technician|
|Gain||Indicating audio and visual levels|
|Gels||Transparent sheets used to colour light|
|Gen-Lock||When an equipments graphic output is locked to an externally generated signal|
|GFX||Short for graphic effects|
|Ghosting||A video error where images overlap each other and a ghost-like image appears|
Italian genre of film, usually murder mystery films which includes elements of horror and eroticism. Giallo is also Italian for "yellow".
|Glitch||An error with the picture or sound|
|Grading||The altering and enhancing of the colour of a shot or scene to define a specific sensory experience|
|Greenlight||The point at which a production will definitely be made. In TV terms, its the point at which a show has been commissioned|
A type of independent filmmaking defined by low budgets, small crews, using whatever is available. Often scenes are shot quickly in real locations without any warning, and without location permits.