Lighting rigs for news and interview sets: mistakes we see and how to avoid them

The most common mistake is buying or hanging fixtures before anyone has decided what the camera will see. A producer asks for a certain number of LED panels, the rig goes up, and only then does the team discover that the presenter's desk is lit from the wrong side, or that the guest chair sits in a shadow no one planned for.

We begin with the framing instead. Where does the presenter sit, how wide is the shot, which way does the guest face, and how much of the background will appear behind them? Those answers tell us how many lights are needed and where they should go.

A rough floor plan and a list of the shots you expect on air are enough to start. Mark the camera positions, the seats and any screens or set pieces. From that single sheet we can propose key, fill and background lighting that suits your programme, rather than a generic kit that happens to fit the budget.

• Draw the floor plan before choosing any fixtures
• List every shot the programme will use on air
• Mark seats, desks and screens as well as cameras

A single strong front light is quick to set up and it does produce a bright picture. It also flattens faces, removes any sense of depth and often throws a hard shadow of the presenter onto the backdrop. On a news set that shadow moves every time someone leans forward, and viewers notice it even if they cannot say why.

The remedy is to separate the roles. The key light shapes the face from one side and slightly above eye line. The fill light lifts the shadow side without erasing it, so there is still some modelling. A separate background light then lets you control the set independently of the people in front of it.

Fill is where studios most often go wrong, usually by making it nearly as strong as the key. A gentler fill, set by eye on a monitor and then checked on the waveform, keeps faces natural. Take time to adjust it with a real presenter in the chair, not a stand-in at the wrong height.

• Place the key to one side and a little above eye line
• Keep fill clearly weaker than the key
• Light the background separately from the talent

Mixing light sources is a quiet cause of poor pictures. A studio with tungsten practicals, daylight-balanced LED panels and a window letting in the grey autumn afternoon will not give a consistent image. Skin tones drift towards green or orange, and a camera that has been white balanced on one source looks wrong on another.

Decide on one colour temperature for the studio and hold to it. Most modern news sets work well with LED fixtures set to a single value, and with set lamps chosen to match. If a room has windows, cover them properly or plan the schedule so that daylight never competes with the rig.

Check the fixtures as well as the settings. Cheaper LED panels can have a noticeable colour cast or a green shift, even when the label claims a given temperature. Put every fixture in front of a camera together before you commit, and compare them against a neutral card under the same conditions.

• Choose one colour temperature and keep to it
• Cover or manage windows during live programmes
• Compare all fixtures on camera before buying

Lighting plans fail quietly when the physical side is not planned. A grid that cannot take the load, cables run across walkways, or a dimmer circuit shared with other equipment will all cause trouble during a live broadcast, usually at the worst moment. These are dull problems, which is why they are skipped.

Before any fixture is hung, we check the rigging points, the weight each one carries and the electrical capacity of the room. We want to know how many circuits are available, where the dimming control sits and how the rig can be safely reached for maintenance.

Control matters as much as the hardware. A simple, labelled dimming desk that a producer can operate in the gallery is far more useful than a clever system only one person understands. We also write down every channel and its purpose, so that any engineer arriving on the day can find their way around the rig without guessing.

• Confirm the load limits of every rigging point
• Count the available circuits before specifying fixtures
• Label each dimming channel and document it

Lights that look good on a monitor can be uncomfortable for the people standing beneath them. A guest facing two bright panels at close range will squint, blink and look nervous, which is the opposite of what an interview needs. Presenters who have been sitting in glare for an hour tend to tire quickly.

Place the fixtures with some distance and angle, and use diffusion so the output spreads softly. Keep the intensity at the level the camera actually needs, not the maximum the fixture allows. Many modern cameras cope very well in moderate light, so there is rarely a reason to drive a set hard.

Heat, fan noise and flicker are the other practical concerns. A noisy fixture near a microphone causes a problem for the audio team, and a cheap panel can flicker on camera at certain shutter speeds. Ask the people who will work on the set what they notice, because they will spot issues before the viewers do.

• Use diffusion and distance to soften the light on talent
• Run fixtures below their maximum where possible
• Listen for fan noise near microphone positions

Many lighting problems only show up when the set is in use. A rig that looked fine during setup, with a technician standing in for the presenter, can behave very differently once a person in a dark jacket sits down, or when the graphics wall is switched on and reflects into the shot.

Always rehearse with the actual talent, the real clothing, the screens running and the cameras on their final positions. Walk through every shot in the rundown, including the moves between desks, and look for spill, glare and blown highlights on the monitors in the gallery.

Record what you decide. A short written note of the dimmer levels, the fixture positions and the camera settings means the next shift can recreate the look exactly. It also gives you something to return to when a bulb is replaced or a panel is moved, so the picture does not slowly drift from week to week.

• Rehearse with real talent, clothing and screens on
• Walk every shot in the rundown, including camera moves
• Write down levels and positions for the next shift