Question on Convoy S2+

[NeutralFan]

@Lightbringer

Actually, the filter makes a huge difference.

Without it, there’s lots of “leakage” that makes non-fluorescing stuff look purple, whereas with it, it essentially shows nothing unless the item fluoresces.

I got a plain UV emitter (365nm) in a ’501, no filter, and an S2+ UV (also 365nm). Despite the beams being different in size, they “showed” essentially the same thing, that purple leakage. After I put the filter in, that’s what showed up the difference!

What fluoresces won’t look any different with or without the filter, but what doesn’t fluoresce will! Purple without, nothing/black with.

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I was a bit of a hard sell. I didn’t think it’d make a difference, ’til I tried it. Now I’m sold.

With my Convoy Nichia UV flashlight, the filter didn’t make a noticeable improvement since there wasn’t much visible light in the first place.

Here’s some testing djozz did on the ZWB2 filter with various UV LEDs: 2mm ZWB2 filter tested. So when I installed the filter, I wasn’t expecting much of an improvement.

It certainly appears to make an improvement with the non-Nichia UV LEDs.