Understanding Lumens, Tactical Flashlight Beam Pattern & Brightness - Elzetta vlog episode 1
4:58
YouTubeElzetta Design
Understanding Lumens, Tactical Flashlight Beam Pattern & Brightness - Elzetta vlog episode 1
This video explains Lumens using an easy to understand analogy. Despite common misunderstanding, Lumens do NOT measure "brightness" (brightness, or luminous intensity, is measured by the Candela). Lumens actually measure total light output (luminous flux). The importance of beam pattern is also discussed and how to select the most appropriate ...
43.7K viewsMay 30, 2014
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