Screen Light for Video Calls
Uses your display as a fill-light source for video calls and recordings, with adjustable intensity and a nominal colour scale in kelvin.
Open tool fullscreen →Interface and local controls remain in Portuguese.
How to use
- Position the browser window facing your subject or onto a secondary display.
- Adjust intensity and the nominal scale from 1800 K to 12000 K; compare the result in the camera preview with the room lighting.
- Lower screen luminance if specular reflections appear on eyeglasses.
When to use
- Corporate video calls on Zoom, Google Meet, and Microsoft Teams.
- Diffuse fill lighting for tabletop and macro product photography.
- Matching camera white balance during remote presentations.
Limitations
The kelvin value selects an RGB approximation; it does not measure emitted colour temperature. Light reaching the subject depends on screen brightness, size, distance and angle, as well as panel behaviour.
Frequently Asked Questions
- Can a monitor replace a physical softbox or ring light?
- It can provide nearby fill light, but offers less control over output, spectrum and placement than a dedicated fixture. Judge the result in the camera preview.
- What does the kelvin control mean?
- It is a nominal reference for choosing a warmer or cooler appearance. The browser converts the value to RGB; selecting 6500 K neither calibrates the monitor to D65 nor reproduces the spectrum of daylight.
Technical Methodology & Display Science
A large nearby screen can behave as an area source and soften shadows compared with a small point source. Illuminance depends on panel size, brightness, distance and angle.
The “Kelvin” control maps a nominal range to sRGB colors. It neither measures nor calibrates the monitor’s emitted CCT; use the camera preview and adjust for the room.
Spectrum, uniformity and color rendering vary between panels. Color-critical or repeatable lighting requires a measured fixture suited to the task.