[UVC SAFETY WARNING] UV-C light sources & filters

[Lou Jost]

22 minutes ago, lukaszgryglicki said:

Yes, pure quartz lenses have a lot of chromatic abberations, I've even posted some tests for my UV5035BK

The nice thing is that these are not just any chromatic aberrations. If the light source has distinct emission spikes at sufficiently different wavelengths, with nothing in between these spikes, you may be able to choose which wavelength you want to image just by changing focus.

[lukaszgryglicki]

I also did. that with setups that pass both UV and IR - was able to have two focus points - one in UV and IR blur/haze and another in IR and UV blur/haze.

Hoya U-340 gives that effect if the sunlight is VERY strong.