Jump to content
UltravioletPhotography

Question about RAW - retaining 'linear' data for image analysis


JMC

Recommended Posts

Added again: Shane, I wonder if we could get Kickstarter Funding for ordering a nice spectro set-up to measure transmission of UV-pass filters, UV-capable lenses and modified camera sensors if we promised to share the data with the Entire World? Do you think we would get any money? :lol: :lol: :lol: What would we need again? A monochromator, a dual gated something, an integrating sphere, a specro something or other. Argh. I have to go look it up. I've forgotten the terms.

 

FOUND IT: Ideally you need a CCD spectrometer, or spectrophotometer (preferably in a dual beam configuration) with a monochromator, an integrating sphere, and a stable output UV-V-IR source. The integrating sphere helps ensure that the readings are independent of the incoming light ray angle. This will provide you with wavelength specific transmission response.

 

I think I'll go pick out a nice set at Ocean Optics and put it on a Wish List. Any guidance from anyone as to what to pick?

 

Going to disagree with "Ideally you need a CCD spectrometer, or spectrophotometer (preferably in a dual beam configuration) with a monochromator, an integrating sphere, and a stable output UV-V-IR source."

 

Ideally one would adapt the existing ISO method for UV. As we have discussed several times before the single fixed grating array type instruments are inadequate.

 

http://www.ultraviol...dpost__p__12349

 

http://www.ultraviol...dpost__p__12371

 

http://www.ultraviol...ndpost__p__6368

 

 

Yeah, yeah I know why don't I just do it right?

 

I am not into keeping secrets, having dabbled in the method I just have not got results on lenses that are up to my standards.

Link to comment

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
×
×
  • Create New...