Will new LED lighting make our presenters look better on camera?

Almost every lighting conversation starts the same way: a producer tells us the presenters look flat, tired or slightly green on air, and asks whether replacing the old fixtures with LED panels will fix it. The honest answer is that LED can help a great deal, but the fixture is only one part of the picture. A good plan decides where the light comes from, how hard it is, what colour it carries and how it meets the camera sensor. We write this in mid autumn because it is the time of year when studios notice the change. Daylight from windows fades earlier, mixed light creeps into the shot, and faces that looked fine in July start to look uneven.

What follows is the answer we give on site, set out in the order we usually work through it: the three lights, colour quality, the camera, the set, and what a presenter can feel from the chair.

Most flattering television lighting rests on three roles. The key light is the main source, placed a little to one side of the camera and above eye level, so it shapes the face with soft shadow. The fill light lifts the shadowed side so the contrast does not become harsh. The backlight sits behind and above the presenter, picking out the edge of hair and shoulders so they separate from the set. None of this depends on LED. Tungsten fixtures did the same job for decades. What changes with LED is how easily you can control each role, because output and colour can be adjusted without gels, and the fixtures run cooler.

The common fault we see is a key light set too high and too hard, which drops dark pools into the eye sockets. Lowering it, widening the source with a diffuser and adding gentle fill usually does more for a presenter than any new equipment.

• Key: main shape, slightly off-axis and above eye level
• Fill: softer, lifts shadows without flattening the face
• Backlight: separates presenter from the set behind

When people shop for LED fixtures they tend to compare brightness. For skin tones, colour rendering is the figure that counts. Cheaper panels can output plenty of light while leaving gaps in the spectrum, and the result is skin that looks grey, magenta or slightly green once it passes through a camera. We look for fixtures with a high colour rendering rating and a consistent colour temperature across the whole rig. Mixing panels from different batches or makers is a quiet cause of faces that shift in tone from one side to the other.

It also helps to settle on one colour temperature for the studio and hold to it. Cameras can be balanced to almost any setting, but they cannot reconcile a daylight-blue window with warm panels in the same frame.

• Check colour rendering, not just lumen output
• Keep every fixture in a rig at the same colour temperature

Each camera sensor responds to light a little differently. Some cope well with bright highlights, others fall apart on a shiny forehead or a white shirt. Lighting that looks pleasant to the eye in the room may clip on one model and look muddy on another. For that reason we plan lighting alongside the camera setup, not afterwards. We check exposure with the actual cameras and lenses the studio uses, with a stand-in sitting where the presenter will sit, and adjust levels until skin sits comfortably in the middle of the range.

Flicker is the other sensor issue. Poorly driven LED panels can produce visible banding on certain shutter speeds, which is a trouble only a camera sees. We test for it before anything is signed off.

A presenter does not sit in a void. Glossy desk tops throw glare back at the camera, pale walls bounce light into shadows and reflective glass can pick up the fixtures themselves. Part of lighting design is walking the set and noting what the light will do once it lands. We often solve a stubborn problem by changing a surface, not a fixture: a matt desk finish, a darker panel behind a guest, a flag to stop spill reaching a screen. These are small fixes and they cost far less than another set of panels.

Power use is a sensible side benefit. LED rigs draw a fraction of what tungsten did, and the lower heat means studios stay more comfortable during long live runs.

• Matt surfaces reduce glare on desks and props
• Flags and barn doors stop light spilling onto screens

Presenters rarely talk about colour temperature. They tell us whether they are squinting, whether the light feels hot, and whether they feel comfortable looking into the lens for a long bulletin. A well-planned LED rig usually earns a quiet remark that the studio feels easier to work in. We ask presenters to sit through a test with us before a rig is finalised. Ten minutes of reading a script under the real lights tells us more about glare and comfort than any meter.

If a presenter wears glasses, we move the key a few degrees and check for reflections. If a guest has deep-set eyes, we lift the fill. Small adjustments, made with the person in the seat, are what separate a plan on paper from a good result on air.