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04/16/2022 11:37:18 AM · #1 |
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04/16/2022 12:18:15 PM · #2 |
That was something I wanted to try many years ago - long before I got my first digital camera. However my Dad persuaded me that UV lights were dangerous, so I gave up on the idea.
If it can be done safely I'd love to try. Based on that article it sounds like hard work though so it might be tough to produce anything challenge worthy.
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04/17/2022 02:15:57 AM · #3 |
If it were easy, everyone would do it and it wouldn't be a "challenge "!
Also, I can't believe that the Feds would allow something dangerous to be used extensively throughout our society, including home aquariums |
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04/17/2022 08:14:19 AM · #4 |
| looks so pretty , but what is this radiation that she splashes them with? |
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04/17/2022 02:11:22 PM · #5 |
Ok, .this is interesting. I just spent 1/2 hour in the bathroom with a bunch of flowers. Now under UV light,
this is what you get IN camera, showing on the back screen, and it looked like this when I shot it with the purples 
Then you download it into Bridge and PS and This is what it actually comes out as.... I DO not know why........ 
So this is what you get RAW with a UV light (I have millions, great for scorpions etc)
SO there is a toooooooooooooooon of work she has done on her photos as I could not get any thing else out of it, and tried with 4 different UV ranges. The plot thickens!
????In my brain, it looks like a normal flower shot, then a UV shot then blended somehow????
Message edited by author 2022-04-17 14:12:57. |
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04/17/2022 03:32:15 PM · #6 |
| Don Komarechka has a good chapter (about 40 pages) on UV macro in this book. I was an early supporter on kickstarter. If you are into macro, it is a really good resource. |
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04/17/2022 04:17:27 PM · #7 |
Originally posted by kirbic:
Don Komarechka has a good chapter (about 40 pages) on UV macro in this book. I was an early supporter on kickstarter. If you are into macro, it is a really good resource. |
I will have a look at that, after I have re-cleaned the bathroom. The bleach I normally use in there makes it look like a crime scene, or 501 toddlers peeing on everything. |
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04/17/2022 09:10:11 PM · #8 |
| Emulate with inversion and exclusion blending. Guaranteed score of 4 in a non uv challenge. |
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04/17/2022 10:06:37 PM · #9 |
| I didn't get into her technique. Maybe there's some light painting in there too, with non UV light? |
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04/18/2022 08:41:48 AM · #10 |
| Usually, visible light is strictly excluded from UV photos, although occasionally a visible light shot and a UV shot are channel-mixed. This looks like UV-Vis fluorescence, however. She's illuminating with a strong UV source that excludes visible light. When so illuminated, some chemical compounds in the flowers absorb photons of UV energy, which puts some of their atoms in a higher-energy state. When those atoms (almost immediately) drop back to their "ground" state, they emit a photon again, at a longer (visible) wavelength. You need a good, strong UV source for this, either a UV flash or a good UV flashlight, ideally with some added filtering for rejecting visible light. A regular "black light" leaks far, far too much visible light, which overwhelms the UV/vis fluorescence. |
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04/18/2022 11:26:13 AM · #11 |
I have a couple of torches with different UV frequencies, I shall have to try it out.
A wuik question if anyone knows the answer.
Why in camera does it show up purples and blues and a spot of green, but then when downloaded it is just blue blue blue.
Is it a translation thing from camera to Bridge or PS? It is a massive difference in camera than basically just a blue photo, can it not read those colours? Very curious about that.
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04/18/2022 06:02:19 PM · #12 |
Originally posted by JulietNN:
...Why in camera does it show up purples and blues and a spot of green, but then when downloaded it is just blue blue blue.
Is it a translation thing from camera to Bridge or PS? It is a massive difference in camera than basically just a blue photo, can it not read those colours? Very curious about that. |
Shooting RAW?
If so, look at the picture style that is being applied. If shooting JPEG... well, don't! but seriously, if shooting JPEG, it is likely that the blue channel is getting blown out. |
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04/18/2022 06:32:26 PM · #13 |
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