How do lumens work?
Are 2x1000lm lights = 1x2000lm light?
Supposedly, but light sellers are notorious for miss-stating the lumens of their devices.
miss-stating the lumens
It's not that they lie, it's that gross emitter luminous flux is almost meaningless without the context of optics design and information about the target to be illuminated.
@salmonchild started
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How do lumens work?
Are 2x1000lm lights = 1x2000lm light?