Basketball is a multi-directional aerial sport. High school and amateur games are played in gymnasiums. Professional play occurs in large, multi-purpose arenas.

Illuminance Criteria. 

Recommended illuminance levels are:

• Class I - Horizontal illuminance: 1250 lux (125 fc) 
• Class II - Horizontal illuminance: 800 lux (80 fc) Class IV - Horizontal illuminance: 300 lux (30 fc) CV = 0.21 or less. (Emax/Emin = 2.5:1 or less) CV = 0.30 or less. (Emax/Emin = 4:1 or less)
• Class III - Horizontal illuminance: 500 lux (50 fc) CV = 0.13 or less. (Emax/Emin = 1.7:1 or less) CV = 0.25 or less. (Emax/Emin = 3:1 or less)