4300k D2S Philips = 3200lm (lumens) 4300k D2R Philips = 2800lm (lumens) 4300k D2S Philips = 2400lm (lumens) actually 5800k 4300k D2R Philips = 2000lm (lumens) actually 5800k 4800k D4S/R (brand) = 3800 (lumens) ** brightest in the market 5800k D4S/R (brand) = 3300 (lumens) 7000k D2S other = 1790lm (lumens) *(other bulb brand) 7000k D2R other = 1390lm (lumens) *(other bulb brand) 8000k D2S other = 1180lm (lumens) *(other bulb brand) 8000k D2R other = 780lm (lumens) *(other bulb brand)
