Studio Lighting Mistakes We See Often, and How to Avoid Them

The most common mistake is rigging lamps to the set drawing alone. A set can look handsome on paper and still be awkward to light once you learn that the presenter walks between two desks, or that a guest stands for the final segment. Lamps placed for the wide shot then throw shadows across faces in the close ones, and the fix means climbing a ladder while the crew waits.

Ask for the running order and the camera positions before the plan is drawn. Where the talent moves, how long each segment sits in one place, and which cameras cover which angle all decide where the key light belongs. A twenty-minute conversation with the director saves far more time than it costs on the day of the shoot.

• Get the running order before the plan
• Mark every talent position and walk path
• Note which camera covers which angle

Judging exposure on a bright monitor in a dim gallery is a trap. Faces can look fine there and turn flat or hot once they reach a different screen. Many studios also set the key to please the presenter standing under it, not the camera that must hold the whole frame.

Read the picture on a waveform and a calibrated monitor, then check skin tones against a neutral reference. Set the key first, add fill to taste, and only then bring in the backlight. Changing all three at once makes it impossible to know which lamp caused the problem when something looks wrong.

• Use a waveform, not only your eyes
• Set key, then fill, then backlight
• Check skin tones against a neutral reference

Mixed light sources cause quiet damage. A studio rig at one colour temperature, a practical lamp on the set at another, and daylight leaking through a window will each push the picture a different way. Cameras can be white balanced for only one of them, so the others show up as green or orange patches on skin and walls.

Walk the room before lighting and look at every source, including monitors and set dressing with built-in lamps. Either gel the odd ones to match or block them out. On location, the afternoon light changes through a shoot, so test the balance again after any long break instead of trusting the morning's setting.

• List every source in the room, even small ones
• Gel or block sources that do not match
• Re-test balance after a long break

Lamps are heavy, hot and hungry. A plan that needs more circuits than the building offers will trip a breaker in the middle of a recording, and a grid that was never checked for load is a risk to everyone beneath it. Heat matters too: a small studio with several lamps running for a full day becomes uncomfortable for talent, and makeup suffers.

Confirm the available supply and the rated load of the grid early, and keep a margin rather than running at the limit. Choose lamps with the heat output in mind, and schedule short breaks for talent under strong light. These checks are dull, but they decide whether a day runs calmly or stops while someone fetches an electrician.

• Check circuits and grid loading in advance
• Leave a margin below the limit
• Plan breaks for talent under strong light

A good rig that lives only in one person's memory is a liability. If the programme returns a month later, or a second crew takes over, nobody can recreate the look. Small details such as lamp heights, dimmer levels and gel numbers are exactly what gets lost, and the second recording then looks subtly different from the first.

Keep a simple record: a plan view, a list of lamps with their settings, and a photograph of the finished set from the main camera. Store it with the programme's other technical notes so the next crew can start from it. Updating the record at the end of a day takes ten minutes and prevents hours of guessing.

• Draw a plan view of the rig
• Record lamp settings and gel numbers
• Photograph the set from the main camera

Lighting is often tuned with stand-ins or an empty set, then left alone once the real people arrive. Real faces reflect light differently, clothing can glare or swallow it, and a guest in a white shirt may need the exposure rebalanced entirely. Problems found during the recording are the expensive ones.

Build a short rehearsal into the schedule with the actual talent and costume, and look at every camera while they speak and move. Adjust once, with the director watching, and then leave the rig alone. A calm crew changes little after the rehearsal, because the thinking has already been done.

• Rehearse with real talent and costume
• Review every camera, not only the main one
• Freeze the rig once the director agrees