bills
noticing nice landscape pebbles
Member since March 2016
Posts: 93 
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Post by bills on Mar 7, 2017 17:11:45 GMT -5
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bills
noticing nice landscape pebbles
Member since March 2016
Posts: 93
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Post by bills on Mar 7, 2017 17:16:46 GMT -5
BTW long wave uv is not dangerous to your eyes. (just don't point the light in your eyes)
Short wave uv is and you need protection. ( short wave will not pass through glass or most plastics)
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bills
noticing nice landscape pebbles
Member since March 2016
Posts: 93
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Post by bills on Mar 7, 2017 17:23:18 GMT -5
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Fossilman
Cave Dweller 
Member since January 2009
Posts: 20,723
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Post by Fossilman on Mar 7, 2017 17:24:53 GMT -5
I have the same UV light James.... Wife bought it for me,it really "POPS" those Geodes and thundereggs..... I know I can get better graphics with a better system,but it's sure fun to be playing around with the ideas!!!     You nailed those photos Michael. Do you use that light for field collecting ? Darn thing has good power. For some reason geodes seem to glow. Thundreggs may be similar. No not yet,there are some caves in eastern Oregon around Bend,that I want to take it with me,into the caves-just to see if anything glows....LOL |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Mar 7, 2017 19:28:34 GMT -5
Thanks for the links and info bills. Looks like you take a standard light and stick a filter in front of it for LW light. |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Mar 7, 2017 19:29:33 GMT -5
fossilman I have used them on cave rocks. They glow crazy.
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bills
noticing nice landscape pebbles
Member since March 2016
Posts: 93
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Post by bills on Mar 8, 2017 13:53:32 GMT -5
James
that is correct. the long wave (365nm)LED's still output some white light the filter blocks most of the white light.
to photograph minerals under short wave uv it helps to shoot through a glass filter.
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Post by txrockhunter on Mar 8, 2017 18:51:58 GMT -5
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rockncajun
spending too much on rocks
Member since September 2009
Posts: 344
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Post by rockncajun on Mar 8, 2017 20:34:58 GMT -5
That light is a short wave light, but not a flashlight. UVP is a well respected brand and I would not hesitate to purchase one. |
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rockncajun
spending too much on rocks
Member since September 2009
Posts: 344
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Post by rockncajun on Mar 8, 2017 20:38:36 GMT -5
I agree with Bill. I have one of these lights and installed a filter to block the white light and it is an incredible long wave flashlight! |
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Post by woodman on Mar 8, 2017 22:43:02 GMT -5
two photos  taken with my canon sx60.  WHAT I WAS TOLD, CALCITE CRYSTALS. |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Mar 9, 2017 4:59:56 GMT -5
Not my fortification shot Jeremy, but from images. HOWEVER, your shots look very much like my rocks under LWUV---as my eye sees them. NOT as my camera recorded them lol. Your images are where I want to be. My camera shots are way way off, not even close. so, I have to ask, did you use a filter ? Or did you mess with cell phone settings ? |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Mar 9, 2017 5:01:31 GMT -5
James that is correct. the long wave (365nm)LED's still output some white light the filter blocks most of the white light. to photograph minerals under short wave uv it helps to shoot through a glass filter. A glass filter of what type ? It must be purple because I am getting an overdose of purple. No yellows no oranges no pinks, just varying shades of purple. Too much purple lol. I am aware of a UV filter for reducing haze....:  |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Mar 9, 2017 5:09:42 GMT -5
I agree with Bill. I have one of these lights and installed a filter to block the white light and it is an incredible long wave flashlight! Great ! Inexpensive too. Thanks for this recommendation. I assume you attach the ZWB2 filter with tape ? Or does it fit in the flashlight's lens cap ? |
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rockncajun
spending too much on rocks
Member since September 2009
Posts: 344
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Post by rockncajun on Mar 9, 2017 5:20:43 GMT -5
For the lights that I can take out the clear lens, I just replace it with the filter glass. But for the lights that will not come apart, I grind the filter glass to fit outside then use black silicon to attach and seal.
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rockncajun
spending too much on rocks
Member since September 2009
Posts: 344
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Post by rockncajun on Mar 9, 2017 5:23:48 GMT -5
The gearbest lights are inexpensive(around $25) but the kicker is the cost of the special rechargable battery. Expect to pay another $25 for battery and charger.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Mar 9, 2017 6:07:01 GMT -5
Thanks rockncajun. There was a day when UV field lights were very expensive. This equipment makes things a whole lot cheaper and compact. |
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bills
noticing nice landscape pebbles
Member since March 2016
Posts: 93
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Post by bills on Mar 9, 2017 20:20:55 GMT -5
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bills
noticing nice landscape pebbles
Member since March 2016
Posts: 93
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Post by bills on Mar 9, 2017 20:27:27 GMT -5
James that is correct. the long wave (365nm)LED's still output some white light the filter blocks most of the white light. to photograph minerals under short wave uv it helps to shoot through a glass filter. A glass filter of what type ? It must be purple because I am getting an overdose of purple. No yellows no oranges no pinks, just varying shades of purple. Too much purple lol. I am aware of a UV filter for reducing haze....: James just plain glass works, but only for shortwave. some lenses will pass sw uv ( Borosilicate glass) to the camera sensor the plain glass blocks it. |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Mar 10, 2017 6:26:40 GMT -5
A glass filter of what type ? It must be purple because I am getting an overdose of purple. No yellows no oranges no pinks, just varying shades of purple. Too much purple lol. I am aware of a UV filter for reducing haze....: James just plain glass works, but only for shortwave. some lenses will pass sw uv ( Borosilicate glass) to the camera sensor the plain glass blocks it. Sounds like a hobbyist should have a LW and a SW ? Or what is preferred ? |
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