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UV/IR Thermal or Xray Photography Humans happen to use visible light naturally but now we can go beyond the usual wavelengths we appreciate, to find out more about our world and ourselves.

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Old September 13th, 2018, 10:10 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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Default Human and simulated Bee vision video

This is a human vision (left) and simulated bee vision (right) video with bee pollinating,
which I shot a few days ago.

https://www.youtube.com/watch?v=iHNxTt-U55o

[Link, as I can't embed videos directly here, sorry...]
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http://photographyoftheinvisibleworld.blogspot.com/ my ultraviolet (UV) work
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Old September 13th, 2018, 01:20 PM
Jerome Marot Jerome Marot is offline
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As a beekeeper, I find the video fascinating. Of course, being curious, I had to check the other videos under your name, including the one where you apply sunscreen.

But I have a question. Silicium sensors are not very sensitive to UV, so that usually rather long exposure times are needed for UV photographs. Obviously, long exposure times are not possible for video, so what camera did you use for the movie? Did you need noise reduction? (I think there are some effects of noise reduction visible).
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Old September 15th, 2018, 03:51 PM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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Quote:
Originally Posted by Jerome Marot View Post
As a beekeeper, I find the video fascinating. Of course, being curious, I had to check the other videos under your name, including the one where you apply sunscreen.

But I have a question. Silicium sensors are not very sensitive to UV, so that usually rather long exposure times are needed for UV photographs. Obviously, long exposure times are not possible for video, so what camera did you use for the movie? Did you need noise reduction? (I think there are some effects of noise reduction visible).
True, UV photogarphy usually happens 8-10 stops below "normal" photography. High ISO of modern cameras has allowed that now, SONY, NIKON, OLYMPUS, PANASONIC etc all provide useful bodies for that, but all need to be suitably modified.
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Old September 16th, 2018, 01:46 PM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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Here is a better synched version of it: https://www.youtube.com/watch?v=HJs-l9ZIDCA
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http://photographyoftheinvisibleworld.blogspot.com/ my ultraviolet (UV) work
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