Calculate green screen (chroma key) lighting requirements for film and video production. Finds required screen lux, uniformity across a 9-point measurement grid, green spill risk on your subject, and subject separation distance — for any screen size, camera format, and production standard.
Measurement units
Metric
Metres, lux
Imperial
Feet, foot-candles
Screen size — presets
Bust / head shot
1.5 x 2.0m
Full body
3.0 x 2.5m
Multi-person
6.0 x 3.0m
Full studio
9.0 x 4.0m
Large stage
12.0 x 6.0m
Custom
enter below
Screen dimensions
Production specification
Measured at subject position with incident meter
Screen lighting setup
Output of each screen light
Min 1.5m recommended to reduce spill
Please enter screen dimensions and light lumens.
Screen illuminance
0 lux
0:1
Uniformity ratio
0%
Spill risk
0m
Subject separation
0
Stop difference
Uniformity meets standard
Top-down studio layout
Estimated 9-point measurement grid (lux on screen)
Green screen lighting technique
Screen size
Production standard
Screen illuminance
Screen:subject ratio
Uniformity ratio
Green spill risk
Recommended separation
Affiliate link – we may earn a small commission at no cost to you