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Fingers with D800M and Blak-Ray B-100 illumination

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#1 bobfriedman

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Posted 07 January 2018 - 01:36

Thought i would try out the D800M (CFA and microlenses removed, low pass filter replace with a BG-38 filter)... Leitz Focotar 50mm f/4.5, Baader U-filter... the B-100A Blak-Ray lights (2) that i have.. with the only thing i could try.. my fingers.. lights were resurrected from back in the day buried in my cellar.. used to do resonance fluorescence with them..

until i can get a better illuminator and subject??

the B-100's lamps consist of 100W mercury vapor bulbs (Sylvania H44GS 100) with a lens that bleeds red.. they get quite hot so the lens (5in diameter)is quite thick...

attached image plus a crop...

Nikon D800M ,Leitz Focotar 50mm f/4.5x,Ultraviolet
1/8s f/16 at 50.0mm iso400

Attached Images

  • Attached Image: _DSC7165.jpg
  • Attached Image: _DSC7165_crop.jpg

Edited by bobfriedman, 07 January 2018 - 12:45.


#2 nfoto

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Posted 07 January 2018 - 08:28

Apparently pBase won't allow direct linking of images. So we miss the finger impression.
Bjørn Birna Rørslett

#3 Cadmium

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Posted 07 January 2018 - 08:40

These images were visible earlier this evening, not now though.
Did you edit/change the post Bob?

Edited by Cadmium, 07 January 2018 - 08:43.


#4 bobfriedman

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Posted 07 January 2018 - 12:43

oops... sorry about that.. i deleted my pbase images and forgot to update the link... my apologies

#5 nfoto

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Posted 07 January 2018 - 13:44

One's fingers in UV will indicate an age of > 100 years ....

Tried that years ago myself. Not again.
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#6 bobfriedman

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Posted 07 January 2018 - 13:51

View Postnfoto, on 07 January 2018 - 13:44, said:

One's fingers in UV will indicate an age of > 100 years ....

Tried that years ago myself. Not again.

well with my lack of available targets, need the spring/summer for some better UV targets.. currently frigid in the northeast weather, -5degF (-20.5degC) at 8am without windchill factor..

however, i found those shots interesting in their detail..

#7 nfoto

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Posted 07 January 2018 - 14:04

UV always discloses additional detail. Whether or not one wants it.
Bjørn Birna Rørslett