Therefore, we can't blindly pursue brightness and lumen number when choosing headlamp.
Two almost identical lumens of headlights, because the light column width is different, the lens system of optical quality is different, can have completely different lighting effect.
But the lumen can tell us what the total brightness is, but it doesn't exactly reflect the quality of a headlamp.
Lumen refers to the sum of light produced by a point light source in all directions
Almost every manufacturer signs the brightness of the head with lumens.
