Lighting for video calls in phone booths: lux, kelvin and glare
Good lighting for video calls in a phone booth means soft, even light on the face from the front, at around 400 to 500 lux, with a neutral colour temperature near 4000 K and a colour rendering index of at least 80. Avoid bright light behind the caller and put the camera at eye level.
Key takeaways
- Cisco’s video-room guidance recommends 400 to 500 lux on faces, about 4000 K and CRI 80 or better; EN 12464-1 sets 500 lx and a UGR limit of 19 for meeting rooms.
- In a booth, the face is close to every light source, so diffusion and direction matter more than raw output.
- Keep the brightest surface in front of the caller, not behind: glass walls facing windows cause silhouettes.
- Ask suppliers for colour temperature, CRI, dimming and the position of the LED source before you order.
Why does lighting matter so much inside a phone booth?
Lighting matters because a phone booth is now a video room for one, and the camera judges light far less forgivingly than the eye. A booth that is comfortable for a voice call can make a face look flat, grey or half in shadow on screen.
Most booths were first designed for phone calls, with a single ceiling light chosen to be bright enough to read by. Video changed the brief. The caller sits close to a laptop camera inside a small enclosure with glass on one or more sides, under a light that sits directly overhead. Overhead light casts shadows under the eyes and nose; glass reflects the screen; and an office window behind the booth can turn the caller into a silhouette.
Video calls are also tiring in ways that poor framing makes worse. Research by Stanford’s Virtual Human Interaction Lab identified four causes of “Zoom fatigue”, including intense close-up eye contact, constantly seeing yourself on screen and reduced mobility from a fixed camera view (Stanford University, 2021). A booth cannot fix all of that, but sensible lighting and camera placement remove some of the self-consciousness that comes from looking badly lit.
How bright should a phone booth be for video calls?
Aim for roughly 400 to 500 lux on the caller’s face, with the desk shelf at a similar level. That range comes from video-conferencing practice and sits close to the levels set for meeting rooms in European lighting standards.
Three published references are useful:
- Video rooms. Cisco’s best-practice guide for video-enabled rooms recommends “400 to 500 lux on faces” and a CRI of 80 or better (Cisco Project Workplace, 2015).
- Meeting rooms. EN 12464-1, the European standard for lighting of indoor workplaces, sets a maintained illuminance of 500 lx for conference and meeting rooms, with a UGR limit of 19, Ra 80 and a cylindrical illuminance of 150 lx, according to lighting manufacturer Glamox’s application guide (2026).
- Office tasks. The University of Warwick’s office lighting guidance, based on CIBSE Lighting Guide LG7, gives 300 lux for mainly screen-based tasks and 500 lux for mainly paper-based tasks (University of Warwick, 2026).
Cylindrical illuminance is the measure most relevant to faces. It describes light falling on vertical surfaces from all directions, rather than on the desk. A booth can meet a desk-level target with a single downlight and still leave faces poorly lit, which is why vertical light matters more than total lumens.
Which colour temperature works best on camera?
A neutral white of around 4000 K is the safest choice for booth lighting used on video. Cisco’s guide states that “a good light color temperature is 4000 kelvin”, and suggests going higher where daylight is the main source.
Colour temperature describes whether white light looks warm (yellower, lower kelvin values) or cool (bluer, higher values). Laptop and webcam software adjusts white balance automatically, but it struggles when two very different sources mix. A warm booth light combined with cool daylight through the glass, or with the blue-white glow of a monitor, can leave one side of the face orange and the other blue. Cisco’s guide also advises against mixing fluorescent and LED fittings in the same space because their colour profiles differ.
Colour rendering matters as much as colour temperature. Both Cisco and the EN 12464-1 meeting-room values cite a minimum of 80 for the colour rendering index (Ra or CRI). Low-CRI LEDs can make skin look grey or green on camera even when the brightness is right. When comparing pods, ask for the CRI of the installed LED strip, not just its wattage.
Where should the light come from?
The best light for a face on camera comes from in front of the caller, slightly above eye level and diffused over a wide area. Light from directly overhead or from behind is the main cause of poor video in booths.
Cisco’s guide describes a glare-free fitting giving directional light at about 45 degrees as optimal for video, while acknowledging it can be hard to achieve. In a booth roughly 1 metre square, the practical equivalents are:
- A diffused ceiling panel or LED strip set towards the front of the booth, over the desk shelf rather than over the seat, so light lands on the face rather than the top of the head.
- A light-coloured desk surface that bounces some light upwards and fills shadows under the chin.
- Dimming, so users can reduce output if the booth sits near a bright window or under strong office lighting.
Glare is the other half of direction. EN 12464-1 limits the unified glare rating in meeting rooms to 19. In a booth, the risk is reflection in glasses and in the laptop screen. A frosted diffuser over the LEDs and a matt interior finish both help. Our guide to office pod finishes explains how felt, fabric and veneer surfaces affect reflections and the overall feel of the interior.
How do you stop the background being brighter than the face?
Keep the surroundings no more than about one and a half times as bright as the face. Cisco’s guide recommends keeping contrast under 1:1.5, giving the example that 500 lux on faces means a maximum of 750 lux on the table and surroundings.
Booth glass makes this harder. A booth facing a window, or placed under a bright open-plan ceiling, may have a background several times brighter than the inside. The camera exposes for the bright background and the face goes dark. The Swedish Work Environment Authority makes a related point for offices generally: it gives an average wall luminance of at least 30 cd/m², roughly 150 lux on light walls, and a luminance ratio of about 5:3:1 between task, immediate surroundings and the wider field of view (Arbetsmiljöverket, 2025). Balanced brightness is comfortable for the eye and for the camera.
Practical fixes, in order of cost:
- Turn or position the booth so its glass door does not face a window.
- Seat the caller facing the glass rather than with their back to it, where the booth layout allows.
- Choose a booth model with more solid panel and less glass behind the seat where the surroundings are bright; compare layouts such as the Smart Privacy Pod on drawings before ordering.
- Specify a darker or mid-tone back wall finish inside the booth. Cisco recommends neutral grey with a light reflectance value of around 50% and advises against completely white walls.
Where should the camera sit?
Put the camera at or slightly above eye level, about an arm’s length away, with the light source behind the camera rather than behind the caller. That combination gives a natural angle and even light.
In a booth, laptops placed on the desk shelf usually sit below eye level. A laptop stand or a small clamp-mounted webcam lifts the camera to eye level. If the booth will be used mainly for video, ask whether a monitor arm or webcam mount can be fitted to the back wall, and confirm there is a socket or USB port within reach. Our article on office pod power and data covers socket and USB-C choices.
Framing also helps with the fatigue issues Stanford identified. Stanford’s recommendations include shrinking the video window, hiding self-view once framing looks right, and placing an external camera further away so users can move. A booth deep enough to sit back from the laptop, such as a focus pod with a desk, makes the last option realistic.
What to ask a pod supplier about lighting
Ask for the lighting specification in writing: colour temperature, CRI, dimming, the position of the light source, and whether lighting and ventilation are on a shared sensor. The table below lists targets drawn from the sources in this article.
| Parameter | Target for video use | Reference |
|---|---|---|
| Light on faces | 400 to 500 lux | Cisco video-room guide |
| Task illuminance (desk shelf) | 300 lux screen work; 500 lux meeting rooms | CIBSE LG7 via University of Warwick; EN 12464-1 |
| Colour temperature | About 4000 K, consistent across fittings | Cisco video-room guide |
| Colour rendering | CRI / Ra 80 or higher | Cisco; EN 12464-1 |
| Glare | UGR 19 or lower; diffused source | EN 12464-1 (meeting rooms) |
| Contrast | Surroundings no more than 1.5 times face level | Cisco video-room guide |
| Controls | Dimmable; separate from fan if possible | EN 12464-1 notes lighting should be controllable |
Lighting and ventilation usually switch on together when someone enters. That is convenient, but check that the fan runs at a speed that keeps air fresh during long calls; our guide to office pod ventilation explains why. If you want to compare interiors and finishes before ordering, see samples and lead times.
Frequently asked questions
Is a ring light worth adding to a phone booth?
It can help where the built-in light is overhead and cannot be changed, because it adds soft light from the front. Choose one with adjustable colour temperature and set it close to the booth’s own light so the two do not clash.
What lux level should a phone booth have?
For video, aim for about 400 to 500 lux on the face, the range in Cisco’s video-room guidance. For general screen work, CIBSE LG7 guidance as summarised by the University of Warwick gives 300 lux.
Why do I look dark on video in a glass booth?
Usually because the background behind you is much brighter than your face, so the camera exposes for the background. Face the glass, reduce bright light behind you, or add front lighting.
Which booths suit frequent video calls?
Booths with a desk shelf, front-positioned diffused lighting and power within reach. See our office phone booths, including the Colour Edition booth, offered in a range of colours.
Conclusion
A booth that looks good on video needs soft front light at around 400 to 500 lux, a neutral colour temperature, good colour rendering and a background that is not brighter than the caller. Specify those points with the supplier and position the booth away from windows. To discuss booth models and lighting options for your floor plan, request a quote.
Sources
- Cisco Project Workplace – Best practices for creating effective video-enabled rooms (accessed October 2026)
- Glamox – Application guide: conference and meeting rooms (EN 12464-1) (accessed October 2026)
- University of Warwick – Office lighting guidance (accessed October 2026)
- Arbetsmiljöverket (Swedish Work Environment Authority) – Office lighting (accessed October 2026)
- Stanford University – Four causes for Zoom fatigue and their solutions (accessed October 2026)