Lighting Your Studio Through the Darker Months: A Seasonal Plan

Every year around now, the same calls reach us. A presenter looks flatter than in the summer, the skin tones on the news desk have drifted, and an operator reports that the picture seems to need more gain than before. Nothing in the studio has changed, yet something has. Usually the answer is daylight. Studios with windows, glazed corridors or a loading door that stays open for most of the day quietly borrow light from outside, and that contribution shrinks as the weeks go on.

Lighting Design is the part of our work I find easiest to neglect and hardest to ignore once it goes wrong. Cameras forgive a great deal, but they do not forgive a key light that has slowly changed colour or a backlight that no longer separates a presenter from the set.

This note is a seasonal checklist rather than a redesign. It assumes you have a working rig, a schedule that is about to get busier, and a limited amount of time before the dark mornings arrive. Treat it as a way to find small faults early, while fixing them is still cheap and quiet.

Begin by switching off anything you can control and standing on the set at the time your first programme normally goes out. Look at the faces of whoever is sitting there, then look at the monitor. If there is any spill from a window or a door, note which side of the set it falls on. That spill has been acting as free fill light, and it will not be there on a December morning.

The most common consequence is a harder, more contrasty picture on one side of the face. Presenters who looked comfortable in September can look tired in November, and the instinct is to raise the key light. That tends to make things worse, because a brighter key with the same thin fill only deepens the shadow.

A better approach is to rebalance rather than add. Bring the fill up a little, check the ratio on the monitor, and leave the key where it is unless the exposure genuinely demands more. Write the settings down. A lighting plan that exists only in one person's memory is a fault waiting for a holiday.

• Note where window or door spill reaches the set and at what times
• Compare a presenter's face on screen at first and last programme of the day
• Adjust fill before touching the key
• Record every dimmer level you change

The classic three-point arrangement still does most of the work in a news or interview studio. The key gives the face its shape, the fill controls how deep the shadows fall, and the backlight lifts the head and shoulders away from the set. In the darker months the backlight deserves particular attention, because a dim or dull set swallows the edge of a dark jacket very quickly.

Check that each backlight is still aimed where you left it. Fixtures drift on their yokes, and a clamp that was snug in spring may have loosened with repeated use. A backlight that has slipped by a few degrees can leave a bright patch on a desk or a glare on a monitor rather than a clean edge on a shoulder.

Where you have dimmable fixtures, use that. Small reductions in the key with matching changes in the fill give you room to keep a natural look without driving the cameras harder. Daniel Okafor, who plans lighting for us, tends to say that the right level is the lowest one that still lets the operators work comfortably.

• Re-aim backlights and tighten clamps and yokes
• Look for glare on desks, glass and monitors
• Prefer small dimmer changes over large ones

Fixtures age. Tungsten lamps shift as they approach the end of their life, and some LED units change slightly in output and colour after thousands of hours. None of this is dramatic from one week to the next, which is exactly why it goes unnoticed until a guest in a bright jumper looks the wrong colour.

Do a simple comparison. Set white balance on a clean white card under the key light, then repeat it with the fill and backlight alone. If the three results disagree noticeably, one of the sources has moved away from the others. Replacing a single lamp or unit is a modest job, but it is much easier to do on a quiet afternoon than before a live bulletin.

Mixed sources are the other usual cause. A practical lamp on the set, a monitor glow or a corridor light with a different colour can pull skin tones sideways. Where you cannot remove the source, we usually look at whether it can be dimmed, shielded or matched to the rest of the rig.

Cooler weather changes how a studio feels to work in. Heat from tungsten fixtures that was a nuisance in July becomes welcome in January, and some teams are tempted to leave more of the rig switched on than they need. That is an easy habit to slip into and a poor one for lamp life and the electricity bill alike.

If your rig is mostly older fixtures, this is a good time to count the load on each circuit and the power drawn by the whole grid. Daniel's rule of thumb is to keep the dimmers well below full at normal operating levels, which leaves headroom and extends lamp life. Lower output also helps presenters, who spend long periods under the lights.

It is also worth checking cable runs, rigging points and safety bonds before the busy season. A fixture hanging from a worn clamp is not a lighting problem, it is a safety problem, and the inspection takes only a few minutes with a ladder and a torch.

• Count the load on each circuit and keep headroom
• Inspect clamps, safety bonds and cable runs
• Switch off fixtures that are not in use

Pick one quiet afternoon in the next fortnight and work through the rig in a fixed order. Start with the daylight check, then re-aim each fixture, then compare colour on a white card, then inspect the hardware. Photograph the set from the camera position at the end so you have a reference to compare against in the new year.

Assign someone to own the lighting notes. This does not need to be a specialist, only a person who will write down what was changed and why. When a programme goes wrong at seven in the morning, the record of last week's adjustments is often the quickest route to the fault.

If you would like a second pair of eyes, a technical audit includes a lighting review with a written report, and the training part of that visit can cover the checks above so your own crew can repeat them each season.