Cat Links Maintenance, Optoma Lumens or Lux? Watts or Whats? How Bright Can My Lamp Shine? PurelandSupply Posted on May 9, 2018 A few months ago, I was watching a program on my Optoma HD800 and I noticed that the usually darkly lit show was more darkly lit than normal. After theContinue readingLumens or Lux? Watts or Whats? How Bright Can My Lamp Shine?