From: ckraftSPAMTRAP@west.net   
      
   Looking at a spot on a fluorescent rock.  Trying to check it with a   
   spectrum analyzer.   
      
   With a photographic spot meter, I read ASA 100, 1 second at f5.6.   
      
   Can this be converted to some units that an engineer would understand.   
      
   I am working close enough to the item that it is an extended source. I   
   presume I cannot gather more light using a positive lens.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)