3 ms·
Lumen does not measure much red light.
by PeterStuer 2y ago
Lumen does not measure much red light.
- ben_w 2y agoLumens being perceputual brightness means any package listing it for IR is definitely lying; but that only makes it a first-pass filter, "no false positives" does not mean "no false negatives". e.g. even when it's about visible light, well, do you trust this claim of 500,000 lumen?: https://www.amazon.de/Shadowhawk-Rechargeable-Extremely-Waterproof-Emergencies/dp/B099S4CR82/ref=mp_s_a_1_14_sspa?crid=3ME1GUAUAQW3M&dib=eyJ2IjoiMSJ9.rh7FTpSGCyMorJnM69NNjPk3kR6q-fUx7my6W6A07lKkMrJlSbO56gSQC80ueRI-8IVNhj49zKIeHDQECwewKZhEJHBPNtQlVv1E0dsjUWbWmtSUS-yzDqoQ3JBRJeTJzWstZO3Wn9ZQxq26D3O6_Q3Rwcvi7CnmGRF1VpKo6Nk9fgmYCzPpCMqpgYvph1Hwa8kdIftD_ouZ7u1NcMMv4w.O8DOQKOrFgsd3g5-PyDxBRxsxAJAn5co_xEK6_XA4Ys&dib_tag=se&keywords=million+lumen&qid=1739873150&sprefix=million+lumen%2Caps%2C89&sr=8-14-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfbXRm&psc=1 https://www.amazon.de/Shadowhawk-Rechargeable-Extremely-Wate...
- zimpenfish 2y ago> do you trust this claim of 500,000 lumen? Having watched Torque Test Channel test[0] these[1] kinds[2] of claims, no, no I do not. [0] https://www.youtube.com/watch?v=pp8dumORMA0 https://www.youtube.com/watch?v=pp8dumORMA0 [1] https://www.youtube.com/watch?v=EBPQKeeYTfo https://www.youtube.com/watch?v=EBPQKeeYTfo [2] https://www.youtube.com/watch?v=ceA5xL6ggEw https://www.youtube.com/watch?v=ceA5xL6ggEw