We are looking at replacing 10 x 1000W MH fixtures in our table tennis club.
Since a maintaining a quality lighting level is IMPERATIVE, I have taken readings at all the tables to compare current lighting levels with those on the projections provided by some prospective vendors. We currently average 1000 lux in the gym, with the darkest table 700 lux, and the brightest 1400.
I know that LED lumens appear brighter to the eye, but I do not know the conversion formula. Our current bulbs have a color temperature of 4,200 and CRI of 65. What conversion formula should I use to ensure that the new lights meet our requirements?
Since a maintaining a quality lighting level is IMPERATIVE, I have taken readings at all the tables to compare current lighting levels with those on the projections provided by some prospective vendors. We currently average 1000 lux in the gym, with the darkest table 700 lux, and the brightest 1400.
I know that LED lumens appear brighter to the eye, but I do not know the conversion formula. Our current bulbs have a color temperature of 4,200 and CRI of 65. What conversion formula should I use to ensure that the new lights meet our requirements?