Key Grip

What they do

Before a recce the key grip reads the production paperwork to find scenes with unusual movement, discusses them with the cinematographer, and reviews the location's restrictions, permissions and plans. On the recce they take measuring and note-taking kit and record topography, camera positions, distances, GPS coordinates, access, security and risk concerns. Planning means designing track and support that suits the shot and the building, negotiating movement options with the cinematographer and director against budget and technical limits, choosing which facilities house supplies the kit, specifying power, and with the best boy grip building equipment lists that may run to cranes and tracking vehicles. Install and strike times get quoted into the shooting schedule, and crane, parking and access permits come from the locations department. On the day they rig early, check tie-downs, weights and safety features, confirm the rig will actually achieve the specified move, and hand the dolly to the dolly grip who operates it on the take. In the American division of labour the department also owns flags, nets, silks, bounce and overhead frames, working to the cinematographer's brief. On public streets the key deals directly with hire companies, event managers and police. At wrap they oversee packing every piece of camera support.

What they decide

The calls that belong to this role and no other.

• How a specified camera move is physically achieved: track, dolly, crane, arm, vehicle, or none of them
• Whether a rig is safe, which is a veto
• The grip equipment list and which facilities house supplies it
• Crew levels, and the install and strike times quoted into the schedule
• In the American system, where flags, nets, silks and overheads go, to the cinematographer's and gaffer's brief
• Proposes cheaper or safer alternatives to a requested move; the cinematographer and director decide

Principles of the craft

• Movement is dramatic punctuation or it is noise: a push that begins on a line and settles on a reaction means something, while the same push drifting through a scene only says the camera is restless. Ask what the move is for before deciding how to build it.
• The department's real product is repeatability: a dolly move that can be hit identically on take nine, same start mark, same speed, same settle, is what lets a director choose a take on performance rather than on mechanics.
• The division of labour is regional, not universal: the ASC's cinematographers-and-gaffers panel put it plainly, that American grips set the flags, diffusion and bounce while in the European system the gaffer's electricians handle everything attached to the fixture. Read the room before you touch a stand.
• Design from the location, not the catalogue: uneven ground, a protected floor, a doorway three inches too narrow. Recce notes with measurements and photographs are what turn a shot list into a build that works on the day.
• Quote the honest number early: install and strike times belong in the schedule before the day, not on it. A key grip who says an hour and means an hour keeps their safety veto credible for the moment it is needed.

Common mistakes

• Laying track to the shot list without measuring the room, then losing the setup to a sightline the dolly cannot clear
• Building a move because the kit is on the truck rather than because the scene needs it
• Under-quoting install time to seem cooperative, and blowing the day instead
• The experienced version: a technically immaculate crane move that puts the camera where the performance cannot be seen from
• Weighting and tying down by eye instead of to the rated load
• Forgetting that the crane needs a licence and a parking suspension the locations department has to obtain in advance

How to learn it

Exercises and routes in, not a reading list.

• Push a dolly along ten feet of track with an operator on the head, hitting the same start and stop marks at the same speed, nine times running. Have somebody time each pass. Consistency is most of the craft.
• Take one dialogue scene and design three moves for its central turn: a push in, a lateral track, and a crane down. Shoot all three, cut them, and note which one makes a cut unnecessary.
• Recce a room with a tape measure and a phone, produce a plan drawing with camera positions and track lengths, then build it. Every surprise is a note for your next recce.
• Shape one hard source with flags, nets and a silk until the same fixture reads as sunlight, then as an overcast window, then as a table lamp. Photograph each and write down what you moved.
• Rig one simple low-mode or car mount under supervision, calculating the load and tie-down rating on paper before anybody lifts anything, then compare your figures to the rental house specification.