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A–B–C–D–E–F–G–H–I–J–K–L–M–N–O–P–Q–R–S–T–U–V–W–X–Y–Z
J-Cut
An editing technique where the audio of the next scene starts before the picture cuts, used for smoother transitions.
Jam Sync
The process of syncing multiple timecode sources (like cameras and audio recorders) by jamming them to a master timecode.
Jib Arm
A camera crane that allows smooth vertical and horizontal movement. The camera is mounted on one end of the arm and counterweights balance the other. Often used for sweeping or overhead shots.
Jib Operator
The crew member responsible for operating a jib arm during shooting.
Jitter
An unwanted shaking or flickering in image or timecode synchronization.
Jo-Leko
A Joker HMI lamp head combined with an ETC Source Four Leko lens, used to create a powerful, focusable beam of daylight-balanced light.
Johnny Bar
Slang for a horizontal bar attached to a dolly, often used for mounting lights or flags.
Joker HMI
A brand and type of compact, high-output daylight-balanced HMI light commonly used in film and commercial production.
JPEG Sequence
A digital workflow term where frames are exported individually as JPEGs for animation or VFX plates.
Jump Cut
An edit where two similar shots of the same subject are cut together, creating a jarring jump in continuity. Often used stylistically to show time passing or for energy.
Junior
A 2,000-watt Fresnel light. Also refers to the 1-1/8″ junior pin used to mount heavier lights and grip gear.
Juice
Slang for electrical power on set. Example: “Do we need juice for that HMI?”
Juicer
Slang for an electrician on set. Works under the gaffer and best boy electric to run power and set lights.
Slang term for an electrician on set, especially one responsible for lighting power distribution.
Juxtaposition
The placement of two contrasting elements in a film (shots, scenes, ideas) to highlight their differences or create meaning.
Junket
A press event for promoting a film, usually involving cast interviews and EPK footage.
That wraps up our Film & Television Dictionary – Letter J entries. This glossary is a living resource—new terms and updated definitions are added regularly as the industry evolves. If you have a suggestion or notice a term we’ve missed, feel free to reach out and share your input.
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Want to keep building your filmmaking vocabulary? Browse the full A–Z index above, or continue directly to Letter K for more film and television terminology.