NikonGear'23

Images => Nature, Flora, Fauna & Landscapes => Topic started by: bobfriedman on June 10, 2018, 21:41:57

Title: Mt. Auburn - UG-2a
Post by: bobfriedman 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
(http://www.pbase.com/bobfriedman/image/167624300/original.jpg)

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
(http://www.pbase.com/bobfriedman/image/167624299/original.jpg)

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
(http://www.pbase.com/bobfriedman/image/167624298/original.jpg)

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
(http://www.pbase.com/bobfriedman/image/167624297/original.jpg)

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
(http://www.pbase.com/bobfriedman/image/167624296/original.jpg)

Title: Re: Mt. Auburn - UG-2a
Post by: Akira 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.

Title: Re: Mt. Auburn - UG-2a
Post by: bobfriedman on June 10, 2018, 23:47:36

Quote from: Akira 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.

well it certainly transmit blue.... the problem is that i can't WB this correctly with the UV-VIS-IR conversion.

Title: Re: Mt. Auburn - UG-2a
Post by: Akira 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?