Open Photography Forums  
HOME FORUMS NEWS FAQ SEARCH

Go Back   Open Photography Forums > UV/IR Thermal or Xray Photography

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.

Reply
 
Thread Tools Display Modes
  #1  
Old October 23rd, 2018, 01:39 PM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
Senior Member
 
Join Date: Jul 2010
Location: Weinheim, Germany
Posts: 1,210
Default African Violet in reflected UV

Was test shooting an African Violet flower with a LDM-1 800mm Long Distance UV-VIS-IR Microscope lens...

This from 6ft/1.8m away:


and this from 1ft/0.3m away:
__________________
Klaus
https://www.flickr.com/photos/kds315/ my normal photographic work
http://photographyoftheinvisibleworld.blogspot.com/ my ultraviolet (UV) work
Reply With Quote
  #2  
Old October 23rd, 2018, 03:43 PM
Asher Kelman Asher Kelman is offline
OPF Owner/Editor-in-Chief
 
Join Date: Apr 2006
Posts: 34,937
Default

Beautiful!

Now Klaus,

Have you also looked into any polarization effects? Can insects detect rotation on UV energies or onlybin the visible spectrum?

How would you find out?

What would the flowers show?

Asher
__________________
Follow us on Twitter at @opfweb

Our purpose is getting to an impressive photograph. So we encourage browsing and then feedback. Consider a link to your galleries annotated, C&C welcomed. Images posted within OPF are assumed to be for Comment & Critique, unless otherwise designated.
Reply With Quote
  #3  
Old October 24th, 2018, 01:09 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
Senior Member
 
Join Date: Jul 2010
Location: Weinheim, Germany
Posts: 1,210
Default

Quote:
Originally Posted by Asher Kelman View Post
Beautiful!

Now Klaus,

Have you also looked into any polarization effects? Can insects detect rotation on UV energies or onlybin the visible spectrum?

How would you find out?

What would the flowers show?

Asher
No I haven't yet looked into UV-Polarization as the needed filters are extremely costly...

Insects (some) have the ability to detect polarization, I have read....
__________________
Klaus
https://www.flickr.com/photos/kds315/ my normal photographic work
http://photographyoftheinvisibleworld.blogspot.com/ my ultraviolet (UV) work
Reply With Quote
  #4  
Old October 24th, 2018, 01:47 AM
Asher Kelman Asher Kelman is offline
OPF Owner/Editor-in-Chief
 
Join Date: Apr 2006
Posts: 34,937
Default

Quote:
Originally Posted by Dr Klaus Schmitt View Post
No I haven't yet looked into UV-Polarization as the needed filters are extremely costly...

Insects (some) have the ability to detect polarization, I have read....
Klaus,

I have been reading up a lot! Insects have s great capability of perceiving specific degrees of rotation or spiral continuous rotation, separately from color! That is amazing!

They use it to get flight orientation and to break down camouflage of predators and prey as well as for sexual signaling.

It seems to me that this is so important for you and I think you could get around some of the cost issue by using surplus optics that the army over orders and they have forgotten why they authorized that research in the first place. If I was a funding organization, which sadly I am not, I would unhesitatingly fund you acquiring the needed equipment!!

Anyway I am sorry we ourselves cannot use this modality with our own eyes as it would give a lot of new information.

Asher
__________________
Follow us on Twitter at @opfweb

Our purpose is getting to an impressive photograph. So we encourage browsing and then feedback. Consider a link to your galleries annotated, C&C welcomed. Images posted within OPF are assumed to be for Comment & Critique, unless otherwise designated.
Reply With Quote
  #5  
Old October 24th, 2018, 01:55 AM
Asher Kelman Asher Kelman is offline
OPF Owner/Editor-in-Chief
 
Join Date: Apr 2006
Posts: 34,937
Default

Quote:
Originally Posted by Dr Klaus Schmitt View Post
Was test shooting an African Violet flower with a LDM-1 800mm Long Distance UV-VIS-IR Microscope lens...

This from 6ft/1.8m away:


and this from 1ft/0.3m away:
Especially the second picture is atmospheric and otherworldly in a pleasant mind opening way!

Asher
__________________
Follow us on Twitter at @opfweb

Our purpose is getting to an impressive photograph. So we encourage browsing and then feedback. Consider a link to your galleries annotated, C&C welcomed. Images posted within OPF are assumed to be for Comment & Critique, unless otherwise designated.
Reply With Quote
  #6  
Old October 24th, 2018, 06:40 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
Senior Member
 
Join Date: Jul 2010
Location: Weinheim, Germany
Posts: 1,210
Default

Quote:
Originally Posted by Asher Kelman View Post
Klaus,

I have been reading up a lot! Insects have s great capability of perceiving specific degrees of rotation or spiral continuous rotation, separately from color! That is amazing!

They use it to get flight orientation and to break down camouflage of predators and prey as well as for sexual signaling.

It seems to me that this is so important for you and I think you could get around some of the cost issue by using surplus optics that the army over orders and they have forgotten why they authorized that research in the first place. If I was a funding organization, which sadly I am not, I would unhesitatingly fund you acquiring the needed equipment!!

Anyway I am sorry we ourselves cannot use this modality with our own eyes as it would give a lot of new information.

Asher
OH, but we can!! There is an effect one can use (once learned) to see POLARIZATION!!

Look here for Haidinger's Brush: https://en.wikipedia.org/wiki/Haidinger%27s_brush and also a bit better described here:
http://www.polarization.com/haidinger/haidinger.html

I can see it very faintly at an 45 degree angle if I look right now on my LCD screen of my Surface just on an empty Word document
(one needs a pure white or even better slightly blue display. like left and right here with open edit box...)
__________________
Klaus
https://www.flickr.com/photos/kds315/ my normal photographic work
http://photographyoftheinvisibleworld.blogspot.com/ my ultraviolet (UV) work
Reply With Quote
  #7  
Old October 30th, 2018, 12:18 AM
Roshni Patel Roshni Patel is offline
Member
 
Join Date: Jun 2017
Posts: 167
Default

Wow, it's beautiful!
__________________
Auto Stamper
Reply With Quote
  #8  
Old November 15th, 2018, 10:17 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
Senior Member
 
Join Date: Jul 2010
Location: Weinheim, Germany
Posts: 1,210
Default

Thank you Roshni!
__________________
Klaus
https://www.flickr.com/photos/kds315/ my normal photographic work
http://photographyoftheinvisibleworld.blogspot.com/ my ultraviolet (UV) work
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
African Violet Dr Klaus Schmitt UV/IR Thermal or Xray Photography 2 December 7th, 2016 12:33 PM
My World: violet - as time goes by (tulips) Wolfgang Plattner Still Photo: Approaching Fine Photography 3 September 27th, 2014 11:10 AM
My World: violet (tulips) Wolfgang Plattner Still Photo: Approaching Fine Photography 4 April 23rd, 2014 12:33 PM
Shadow Violet Petite charlotte thompson Close-up & Macro 4 July 17th, 2012 03:29 PM
Reflected in a glass Luciano Sassi Photography as Art 4 August 5th, 2008 06:53 AM


All times are GMT -7. The time now is 06:40 PM.


Posting images or text grants license to OPF, yet of such remain with its creator. Still, all assembled discussion 2006-2017 Asher Kelman (all rights reserved) Posts with new theme or unusual image might be moved/copied to a new thread!