In World, Olympic and Paralympic title competitions the light intensity, measured at the height of the playing surface, shall be at least 1000 lux uniformly over the whole of the playing surface and at least 500 lux elsewhere in the playing area; in other competitions the intensity shall be at least 600 lux uniformly over the playing surface and at least 400 lux elsewhere in the playing area. Where several tables are in use, the lighting level shall be the same for all of them, and the level of background lighting in the playing hall shall not be greater than the lowest level in the playing area. The light source shall not be less than 5m above the floor. The background shall be generally dark and shall not contain bright light sources or daylight through uncovered windows or other apertures.
ittf rules
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Tue es oder tue es nicht. Es gibt kein Versuchen. [Meister Yoda]