From: into@oblivion.nothing.com   
      
   Phil Hobbs  wrote in   
   news:4E788AA5.9060903@electrooptical.net:   
      
   > Colour CCDs usually have a little walkoff plate that uses polarization   
   > to smear one pixel's worth of area into four.   
      
   Interesting. Didn't know about that part. But it makes perfect   
   sense. I have a little 'security camera' that obviously does   
   not have this plate as when the image is 'perfectly' focused I   
   get all sorts of moire effects - typically blue/yellow fringes   
   on vertical edges.   
      
   Of course I'm going to go googling but in case I have trouble   
   finding the information, does anyone know of a website with a   
   good technical treatment of all these little details of digital   
   camera design?   
      
   Brian   
   --   
   http://www.skywise711.com - Lasers, Seismology, Astronomy, Skepticism   
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