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Old 23-09-2021, 04:18 PM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 2,945
Quote:
Originally Posted by Merlin66 View Post
JA,
Life for me is never easy at times.....
Maybe it just got easier for you..... (hopefully)
ZB1 B390 UV Pass Filter in 25mm Diameter unmounted size
https://www.ebay.com.au/itm/26428845...0AAOSwFs1cFQQd

ZB1 B390 UV Pass Filter in 49, 50, 55, 64 & 75mm Diameter unmounted sizes
https://www.ebay.com.au/itm/27439485...YAAOSwUixe4u~H

ZB1 B390UV Pass Filter in M52, M58, M67 & M77 Screw in filter sizes
https://www.ebay.com.au/itm/27439485...EAAOSwocFe3zUg

These ZB1 filters show reasonable ~75% transmission at 390nm -ish with not much ~0, in the visible range.There is some minor 0-10% transmission between 700nm to 1000nm and more beyond that , but the camera's response should be falling heavily by then. See the ZB1 filter curve below in red ....
Click image for larger version

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Even I might have to get 1

Best
JA

Last edited by JA; 23-09-2021 at 05:02 PM.
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