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Does anyone know the peak wavelength of the following UV blacklight?

Started Jan 27, 2018 | Questions thread
BobORama
BobORama Senior Member • Posts: 2,842
Re: Does anyone know the peak wavelength of the following UV blacklight?

petrochemist wrote:

Filters that pass UV but block visible & NIR are expensive (typically ~$200). All the affordable options that used to be used with film (such as woods glass, U330 U340...) transmit NIR.

In case you want something a bit less pricey, I just helped one of our departments in selecting some gear for UV photography, you can get a smaller diameter short-pass filter ( 43mm  / 52mm )  for ~$100, see seller "image-laboratory" on e-bay for example, who make very high quality short pass filters that we know work properly.

I am still very interested in a lower cost source for narrow band pass filters for UV.   They are super expensive for even small diameters.    Last time I priced out a 3 filter set it was nearly $1000 and they were an inch in diameter.   You can do nice false color work with only 2 of them.

 BobORama's gear list:BobORama's gear list
Pentax K-5 Pentax K-1 Sigma 10mm F2.8 EX DC HSM Diagonal Fisheye Pentax smc DA 18-55mm F3.5-5.6 AL WR Samyang 14mm F2.8 ED AS IF UMC +9 more
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