Light Output Versus Beam Distance Part 3 of 3



Light Output Versus Beam Distance Part 3 of 3

So while a flashlight’s Light Output – its “lumen rating” – tells you nothing at all about how good or bad a job the flashlight does at forming a useful beam of light, the flashlight’s “Beam Distance” rating is all about its ability to form light into a useful beam and send it in a useful direction.  “Beam Distance” thus strongly correlates to a flashlight’s optical quality; whereas Light Output has nothing whatsoever to do with beam-forming optics. In fact, to get a high Light Output score, a flashlight would not even need to have a reflector or lens, at all!
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