Studio Lighting Mistakes We See Often, and How to Avoid Them
Most lighting trouble on a live programme starts in planning, not on the night. Here are the mistakes we meet most often on studio sets and stages, and the habits that prevent them.
FM
Fiona MacLeod
6 min read
Lighting for the room instead of the camera
The most common mistake is also the easiest to understand. Someone walks onto a set, looks at the faces in the room, and decides the light looks fine. A camera does not see what an eye sees. Its sensor has a narrower range, it reacts differently to bright backgrounds, and it flattens depth unless the light gives it something to work with.
Our habit is to light from the monitor, not from the studio floor. Once the camera is white balanced and exposed, we judge every adjustment on the picture the viewer would actually receive. A presenter who looks well lit standing at the desk can look grey or shiny on screen, and that only shows up when you check the shot itself.
It also helps to light with the final camera positions already fixed. Moving a camera after the plot is done changes which shadows fall where, and fixing that during a live rehearsal is stressful for everyone.
Judge light on the camera monitor, never by eye alone
Fix camera positions before finalising the plot
Check a presenter on the shot, not at the desk
Skipping the key, fill and back balance
Many sets arrive with plenty of fixtures and still look flat or harsh. Usually the issue is balance. A strong key light with no fill leaves one side of the face in heavy shadow, and a back light set too hot makes hair glow and separates the head from the set in a way that looks forced.
We start with the key light, placed a little off the camera axis and slightly above eye line, then bring in fill until the shadow side holds detail without losing shape. The back light comes last and stays modest. If you can notice it as a separate light, it is probably too strong.
On a two-person interview the same thinking applies twice, and the two keys must match in strength and colour, or the cut between the guests will feel as though they sit in different rooms.
Ignoring colour temperature across mixed sources
A set often grows over time. A few older fixtures stay, a new LED panel is added, a practical lamp on the desk is left on, and daylight leaks in through a window. Each source has its own colour, and the camera can only be balanced for one of them.
The result is skin that drifts from warm to cold depending on where the presenter leans. Fixing it on the night is slow, and correcting it in the vision mixer rarely works across every shot.
We prefer to choose one colour temperature for the whole set and bring everything to it, either by using fixtures of the same type or by gelling the odd ones out. Windows are covered or controlled on live days, since daylight changes through an afternoon in these autumn weeks and a morning rehearsal will not match the broadcast.
Choose one colour temperature and keep to it
Control or cover windows on live days
Replace or gel any fixture that does not match
Forgetting the background and the set itself
Presenters get attention, but the set behind them is just as visible. A common slip is lighting the person well and leaving the backdrop dark, so the picture feels cut out and heavy. Another is placing the key so that a shadow of the presenter falls directly on the wall behind them.
We bring the presenter forward from the background where the space allows it, which lets the light on the set be controlled separately. Even a gentle wash on the backdrop gives the shot depth and keeps the edges of the picture from sinking into black.
Reflective surfaces deserve a check as well. Glossy desk tops, glass screens and shiny table legs catch fixtures and throw glare into the lens. A small flag or a change of angle usually solves it, provided someone looks for it before the doors open.
Leaving power, rigging and heat to the last day
A lighting plot on paper can work perfectly and still fail in the building. Circuits may not carry the load, the rigging points may sit in the wrong place, and a hot fixture hung too close to a presenter can make a long programme uncomfortable.
We ask early what power is available, how the grid or stands will be fixed, and how long the show runs. A bulletin of twenty minutes is forgiving. A multi-hour concert broadcast is not, and cables, dimmer capacity and safe working height all need agreeing in advance with the venue.
Spare lamps and a clear cable route are part of the plan too. When a fixture fails during a live show, nobody wants to search for a ladder or discover that the replacement is the wrong type.
Confirm circuits and rigging points early
Allow for heat on long programmes
Keep spare lamps and a tidy cable route
Not rehearsing with real people and real movement
A set lit with a stand-in sitting still will look different once the actual presenter arrives. Skin tone, clothing, height and the way someone moves all change how the light behaves. A guest who leans forward when speaking can walk straight out of a carefully placed key.
We try to rehearse with the people who will be on air, wearing what they will wear, and we mark the working area on the floor so they know where the light is good. Where movement is part of the show, we walk it through at the planned pace.
Small changes at this stage cost minutes. The same changes made during a live broadcast cost the viewer's attention. A short rehearsal with the full lighting state is usually the best use of the time before going to air.
Most lighting problems are not about equipment. They come from judging by eye instead of by camera, mixing sources, forgetting the background and leaving practical matters until the last day. A plot built around the shot, rehearsed with real people and checked against the building tends to run quietly. That quiet is what you want from lighting on a live programme.
Fiona MacLeod explains the audio terms heard in every gallery, from noise floor to room tone and reverberation time, and why each one matters for speech and live music on air.
How a small, practised crew turns a stage event into a live multi-camera programme: the recce, the kit, the rehearsal and the quiet decisions made while the band plays on.
Callum Reid explains how flairuni plans vision mixers, routing, monitoring and intercom as one control room, and what clients can expect from an integration project this autumn.
flairuni plans and runs live television production from Inverness: studio integration, cameras, sound and lighting for news, interviews, concerts and festival stages.
