Author Topic: Mt. Auburn - UG-2a  (Read 804 times)

bobfriedman

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Mt. Auburn - UG-2a
« on: June 10, 2018, 21:41:57 »
Nikon D800 UV-VIS-IR ,Nikkor 17-35mm f/2.8D ED-IF AF-S ,UG-2a
1/160s f/5.6 at 17.0mm iso100


Nikon D800 UV-VIS-IR ,Nikkor 17-35mm f/2.8D ED-IF AF-S ,UG-2a
1/200s f/5.6 at 17.0mm iso100


Nikon D800 UV-VIS-IR ,Nikkor 17-35mm f/2.8D ED-IF AF-S ,UG-2a
1/200s f/5.6 at 19.0mm iso100


Nikon D800 UV-VIS-IR ,Nikkor 17-35mm f/2.8D ED-IF AF-S ,UG-2a
1/125s f/8.0 at 19.0mm iso100


Nikon D800 UV-VIS-IR ,Nikkor 17-35mm f/2.8D ED-IF AF-S ,UG-2a
1/200s f/8.0 at 19.0mm iso100
Robert L Friedman, Massachusetts, USA
www.pbase.com/bobfriedman

Akira

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Re: Mt. Auburn - UG-2a
« Reply #1 on: June 10, 2018, 23:46:17 »
Interesting color.  Do you detect the usable effect of the purple portion?  I don't think this 17-35 zoom would transmit any usable amount of UV.
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bobfriedman

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Re: Mt. Auburn - UG-2a
« Reply #2 on: June 10, 2018, 23:47:36 »
Interesting color.  Do you detect the usable effect of the purple portion?  I don't think this 17-35 zoom would transmit any usable amount of UV.

well it certainly transmit blue.... the problem is that i can't WB this correctly with the UV-VIS-IR conversion.
Robert L Friedman, Massachusetts, USA
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Akira

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Re: Mt. Auburn - UG-2a
« Reply #3 on: June 11, 2018, 00:51:41 »
Judging from the transmission chart of UG-2A, it might be regarded as a light IR filter with the additional purple.  It could be interesting for the false color effect?
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira