In addition to major brands such as 「CATEYE」, 「LEZYNE」「KNOG」「Busch+Muller」 etc., you can check the brightness, light distribution, change in light intensity over time, etc. of the bicycle lights sold on Amazon, which are difficult to understand from the specifications alone.
Use the left and right "LIGHT" buttons to select a light to compare.
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Comparison of irradiated photos taken under the same conditions
By moving the slider to the left and right, you can visually compare brightness and light distribution, which is difficult to see from the specs alone.
Compare photos of beams using vertical walls
By checking the beam from the front, the side and the top, you can see how the light spreads and the cutoffs.
This line graph shows the relationship between battery and brightness.
You can check the change in brightness over time.