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LED strip lighting for a chroma key background
We are trying to figure out how brightly your FilmGrade WHITE LED strip lights would illuminate a chroma key background surface approximately 8 ft away.
I've checked on our end, and based on measurements taken in the past, our estimated illuminance at a 4-ft distance is 20 footcandles. Our estimated illuminance level for an 8-ft distance, based on this measurement and the inverse-square law, would be 5 footcandles.
The illuminance requirements for a chroma key background would likely depend on the relative contrast levels between the foreground subjects, but should you need a higher brightness level, we would recommend using multiple rows of the LED strip light to increase the amount of illuminance falling on the chroma key background.
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