A gaffer is the head of the electrical department. They take the director of photography's description of how a scene should look and work out how to physically achieve it: which lights, where, on what rigging, powered how, in what order, and within the time the schedule allows.
The relationship is the defining feature of the job. The DP says what; the gaffer says how, and how long, and whether the building's power supply will take it.
Where the name comes from
Most likely from the gaff, a long pole with a hook, used in theatre to adjust hanging lights and in fishing for rather different purposes. Whether or not the etymology is exact, it captures the job: the person responsible for what is hanging up there.
Prep
Scouting. The gaffer walks locations with the DP, ideally at the time of day the scene will be shot. They are assessing what natural light does in the space, where lights can be placed and rigged, and critically, where the power is.
Power planning. Every location needs a power assessment. What does the building supply, how many amps, on how many circuits, and where are the boards. If it is insufficient, a generator is required, which has cost, noise and permit implications. Discovering a power problem on a shooting morning is a lost day.
The lighting plan. Working from the DP's intent and the shot list, the gaffer produces the equipment order: fixtures, stands, distribution, cable, control, and consumables. This is a substantial budget line and the gaffer usually owns it.
Pre-rigging. For anything large, the electrical department rigs a location days before the unit arrives. A street exterior at night might take two days of rigging for one night of shooting. Planning that is the gaffer's job, and it is the main reason a good gaffer saves a production more money than they cost.
On the day
The cycle repeats every setup:
- Hear the brief from the DP during or just after blocking. Sometimes detailed, sometimes a sentence and a gesture.
- Translate it. Decide the fixtures, positions, heights, intensities, diffusion, color and control needed.
- Direct the crew. Instructions to the best boy and electricians, who place, rig, cable and power the units.
- Refine with the DP, adjusting until the image is right.
- Hold it through the takes, dealing with anything that fails, and manage continuity of light between setups.
- Prepare the next setup, ideally starting before the current one has finished.
Through all of this the gaffer is tracking safety: cable runs, rigging loads, heat, water, and working at height.
A DP might say "I want it to feel like the room is lit by the window and one bad overhead". That is the brief. The gaffer converts it into: a large soft source outside the window at a specific height, negative fill on the opposite side, a practical fixture swapped for a controllable bulb, a dimmer board channel for it, and enough distribution to power all of it from a supply that turns out to be three floors down. Doing that translation quickly, and knowing which of the DP's words are precise requirements and which are impressions, is the actual skill. Gaffers and DPs who have worked together for years communicate in a shorthand that sounds like nothing to an outsider.
The department
Gaffer. Head of department.
Best boy electric. The gaffer's second, and despite the name the job is largely administrative: managing the crew, the equipment order, the truck, timesheets, and the ordering and returning of kit. It is the departmental logistics role and it is why the gaffer can stay on the floor.
Electricians / sparks. The crew who rig, place, cable and operate the lights.
Rigging gaffer and rigging crew. On larger productions, a separate team that pre-rigs locations before the shooting unit arrives and de-rigs afterward.
Board operator. On shows with extensive dimmer control, a dedicated operator running the lighting console.
Generator operator. Where a genny is in use.
Electrical versus grip
The distinction confuses everyone new to a set, and it is worth learning because it determines who you ask for what.
Electrical (the gaffer's department) handles anything that produces light, plus the power that runs it. Lamps, cable, distribution, dimmers, generators.
Grip (the key grip's department) handles anything that shapes, blocks or supports. Flags, nets, diffusion frames, bounce boards, stands, and all camera support including dollies and cranes.
The rough rule: if it plugs in, it is electric. If it does not, it is grip. A light is electric. The flag cutting that light off the wall is grip. A practical lamp is electric; the rigging holding it up may be grip.
This division exists because the two crafts are genuinely different, and on a large set they work simultaneously on the same setup without getting in each other's way.
Safety
Worth its own section, because this department carries the most direct physical risk on a film set.
Gaffers deal with high current, heavy fixtures at height, hot lamps, cable runs across walkways, and often water and weather at the same time. In most jurisdictions there are certification requirements for the people doing this work, and they exist for a reason.
A gaffer has the standing to refuse an unsafe setup, and a good one uses it. If a gaffer says a rig cannot be done safely in the time available, that is a technical judgment and not a negotiating position.
What makes a good one
Speed with judgment. Knowing the fastest acceptable solution rather than the ideal one, because the schedule is the constraint that never relents.
Anticipation. The best gaffers are rigging the next setup while the current one shoots, having worked out from the shot list what is coming.
Knowing the kit. What each fixture does, what it draws, what it weighs, and what can substitute for what when the order is short.
Calm crew management. They are directing several people doing physical work under time pressure.
Honesty about time. A gaffer who says forty minutes and means forty minutes is worth an enormous amount to a first AD.
On a small film
On a short, the gaffer might be one person with a few lights in a car, and they will also be the best boy, the sparks and the rigger.
Three things worth insisting on regardless of scale:
- Check the power before the shoot day. Walk in, find the board, and know what you can draw. This one check prevents the most common small-shoot disaster.
- Do not overload domestic circuits. Old wiring in a residential location will not take what you assume, and tripping a breaker in a house you are borrowing is a bad afternoon.
- Give the lighting person the shot list in advance. Even one person with three lights works twice as fast if they know what is coming.
Next
The other half of the lighting floor: the department that shapes light rather than making it, and the person with the most misleading job title in the industry.
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