One Light Setup for YouTube: Where to Put a Single Light

Yes, for one person in one place. A talking head needs three things from light: enough of it that the camera is not straining, softness so the shadows on your face fade rather than cut, and direction so your face has shape. One large source to the side delivers all three.

What one light cannot do on its own is separate you from the background or light two people evenly. Those are the jobs a second and third light take on in a classic three-point setup (key, fill and back light). For a solo creator, a reflector and a sensible distance from the wall cover most of that gap for a fraction of the cost.

The order to spend in is the one from my YouTube starter kit guide: sound first, then light. One good light comes before any camera upgrade, because a phone in good light beats a better camera in a dim room.

• Key light: the main light on your face. In a one-light setup it is the only light. Elgato (a creator-gear brand owned by Corsair) also uses Key Light as a product name.
• Fill: anything that lifts the shadow side of your face. It can be a second light, a reflector, or a white wall.
• Soft light: light from a source that is large compared with your face. Size relative to the subject is what makes light soft, so a softbox close to you is softer than the same softbox across the room.
• Feathering: turning the light so its edge, not its centre, falls on you. The edge of a softbox is gentler and more even than its middle.
• Broad and short lighting: if your face turns slightly away from the camera, broad lighting lights the side nearer the lens and short lighting lights the side further away. Short lighting gives a slimmer, more shaped look.
• Colour temperature: how warm or cool a light is, in kelvin (K). Daylight sits around 5500-6500K; household bulbs around 2700-3000K. My colour temperature and CRI guide covers why mixing them looks wrong on camera.

With a reflector. A 5-in-1 reflector is a folding disc with a translucent diffuser and a zip cover in white, silver, gold and black. White gives the softest, most natural fill. Silver bounces more light back and looks crisper. Gold warms the skin, which can clash with a daylight-balanced key. Black does the opposite of filling: it soaks up light to deepen the shadow side when you want more contrast.

The NEEWER 110 cm 5-in-1 reflector (NEEWER is a long-running Chinese photo-accessory brand) has a listing that describes that same white, silver, gold, black and translucent set. At 110 cm it is large enough to fill a whole face and shoulders. A reflector needs holding, so plan for a clamp or a spare stand, or lean it on a chair just out of frame.

You can also fill for free. A white wall a metre or so to the side does the job of a reflector, and so does a large sheet of white foam board from a stationery shop. What does not work as fill is a second, differently coloured light, such as the ceiling bulb or a desk lamp. It adds a second colour of white to your face.

Closer than feels natural. Light from a small source falls off with the square of the distance, the inverse-square law: double the distance and you get roughly a quarter of the light. A softbox is not a point source, so the real fall-off near it is gentler, but the direction holds.

That fall-off is useful with one light. With the light half a metre from your face and the wall two metres behind you, your face is far brighter than the wall, and the background drops darker without a second light to control it. Move the same light across the room and you and the wall end up lit almost equally, which looks flat.

Distance also sets softness. A 50 cm softbox half a metre away is a large source next to your face. The same box two metres away is a small one, and its shadows harden. If the light looks harsh, move it closer before you buy anything bigger.

Get away from it. Sitting a metre or two in front of the wall gives the light room to fall off, keeps your shadow off the wall and lets the background read as a darker frame around you.

If the background looks too dark and empty, add a practical: a lamp in shot that is part of the scene rather than lighting you. It gives the eye something behind you and suggests depth. Fit it with a bulb close to your key light's colour temperature, or dim it right down, so it reads as decoration rather than a competing light source.

A desk setup adds one more trap: the monitor. A bright screen in front of you is a cool, blue light on your face. Dim it while you record, or set your key light to match it.

Any of these will do the job. The choice comes down to whether the light stands on the floor or sits on the desk, and how much space you have. Prices for each are in the sections below.

RALENO (a Chinese maker of budget photo lighting) sells the same design as a single 40×40 cm box and as a pair of 50×50 cm boxes. Both listings state a 50W LED bulb, a 2500K-7500K colour range, a CRI of 97 or more and a 2.4GHz remote. The single kit's stand runs from 16.5 to 60 inches (about 42 to 152 cm); the 2-pack's stands run from 68 to 200 cm.

• Single 40×40 cm, £42.99: the lowest cost of entry, and a small footprint. The smaller box is a smaller source, so it needs to sit closer for the same softness, and the shorter stand tops out around head height for someone sitting, which suits a desk better than a standing shot.
• 2-pack 50×50 cm, £69.99: about £27 more for a larger box on a taller stand, plus a second light you can leave in the cupboard until you want it. That second light is the upgrade path this page keeps pointing at.

The pair is the one I chose. A softbox does need floor space, and two stands either side of a chair take up a lot of it. My budget lighting for product videos post covers the kits I compared before choosing.

It is better when the floor is not yours to spend. A panel clamps to the desk or sits on the monitor, so it never needs moving out of the way.

The Key Light Neo (Elgato's smallest panel, 150 × 150 mm) sits on top of a monitor. Its Amazon UK listing gives up to 700 lumens from a 7.5W USB-C port and up to 1,000 lumens from a 3A power supply, a 2900-7000K colour range and a CRI above 94. On top of the monitor it sits close to the camera's axis, so it gives flatter, more frontal light than a softbox at 45 degrees. That suits a webcam-style video, and it is less flattering for a more cinematic look.

The Key Light Air MK.2 (Elgato's 15-inch edge-lit panel, launched in July 2026) is the bigger option. Corsair's launch announcement gives up to 2,100 lumens, a desk mount and three 1/4-inch threads for rigging it elsewhere. Its listing gives a 2900-7000K range. The Neo was £89.99 and the Air MK.2 £129.99 on Amazon UK when I checked. It is a large enough source to work as a proper key at 45 degrees on its own arm.

• Light straight in front. A light beside the lens flattens the face and puts a bright reflection in glasses. Move it round to 45 degrees.
• Light too far away. A softbox across the room is a small, hard source that lights the wall as much as you. Bring it in.
• Sitting against the wall. Your shadow lands right behind you and the background is as bright as your face.
• Leaving the ceiling light on. It adds a warm top light and a second colour to your skin. Switch it off.
• A window behind you. The camera exposes for the bright window and your face goes dark. Turn round so the window is beside or in front of you, or close the blinds.
• Running an LED very dim. Banding on video is worst at low dimmer settings. Keep the light near the top of its range and move it further away, or use the camera's exposure to bring it down. My frame rate and shutter speed guide covers the settings side.

When the reflector stops being enough. Three cases make a second light worth its floor space: two people on camera, a background you want lit on purpose, or a separate overhead or product shot you film in the same session. For the desk side of that, my YouTube desk setup guide lays out where a second light and an overhead mount go.

Until then, one light set up well beats three set up badly. Put it at 45 degrees, raise it, bring it close, fill with white, and switch everything else off. That is the whole one light setup for YouTube, and it fits in the corner of a spare room.

• Corsair: Elgato's Key Light Air MK.2 hits the creator sweet spot
• Ulanzi: desk broadcast lighting and eyeglass glare
• Wikipedia: Inverse-square law
• Amazon UK product listings for each product linked above, checked on 3 November 2026