Quote:
Originally Posted by Brigand
Yep lumens and Lux is where I was heading.
Neither being an accurate science for measuring efficient and effective headlight throw distance and what the driver can see.
Probably Lux at say 30 meters, 60 meters etc over width of road lane.
Lumens just falls in to yep they are bright.
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Exactly this. I have a number of flashlights with different types of LEDs with varying lumen outputs. Some emit 20-30% more lumens than others but do not appear brighter because of throw distance and even hue etc. More lumens doesn't necessarily mean better or worse.