REVIEW: UKing ZQ – X900 600Lm Zooming Flashlight (#3 type Zoomie) picture heavy!

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hank
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WalkIntoTheLight
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Yeah, that should give good results. Have you tested this light?

hank
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No, I don’t have one of these lights.
I of course cheerfully accept offers to review samples (grin).

And I recommend the $40 spectrometer kit, which PublicLab continues to improve. It’s fascinating to see how these fluorescent light sources work (and LEDs are fluorescents). You can see the blue emission spike in all the “warm white” lights, plus the added phosphor colors.

I think you can see all the spectra I’ve taken at: https://spectralworkbench.org/profile/hank

They show the blue emission that drives most LEDs, as well as the phosphor colors.

There are also some compact fluorescents shown there (CFLs)

PublicLab has you calibrate your spectrometers using CFLs, which have easily identifiable spectra.

WalkIntoTheLight
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Interesting. Is there software to convert the spectra into a graph?

hank
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Register and ask on their forums about the PublicLab tools — they’re rapidly evolving.

WalkIntoTheLight
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Have you tried it with a UV light? I’m curious to know if it will pick up the violet or even UV part of the spectrum. I’ve tried things like that (including a rainbow prism) with my camera, and it shows violet as blue. I presume because it only has RGB sensors, it has no way to show wavelengths shorter than blue, as anything other than blue.

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