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LUX vs Lumen

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When purchasing a dive light, many customers have heard the term lumen used to describe or rate the light output. What is a lumen? Is a lumen the best way to qualify light output?

Halcyon has put out a great 3 minute video which illustrates the differences between lux and lumen. It also has some great cave diving footage. Enjoy

Lux VS Lumen from Halcyon Dive Systems on Vimeo.