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   alt.os.windows.xp      Another Windows XP fan forum      2,222 messages   

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   Message 412 of 2,222   
   Nigel Cummings to All   
   Re: FOVEON: There is no substitute   
   25 Apr 06 17:11:00   
   
   XPost: rec.photo.digital, alt.photography, rec.photo.digital.slr-systems   
   XPost: rec.arts.marching.drumcorps   
   From: n.cummings@blueyonder.co.uk   
      
   Any of the high end DSLR's irrespective of whatever image capturing device   
   they possess, will produce excellent photographs if used properly.   
   Perhaps people should go and take photographs rather than talk incessantly   
   about the brand and what is 'under the bonnet' of their DSLRs?   
      
   "Gary"  wrote in message   
   news:1145940749.281804.195940@g10g2000cwb.googlegroups.com...   
   Why The X3 is Way Betterer   
      
   To capture the color that other image sensors miss, Foveon X3® direct   
   image sensors use three layers of pixels embedded in silicon. The   
   layers are positioned to take advantage of the fact that silicon   
   absorbs different wavelengths of light to different depths. The bottom   
   layer records red, the middle layer records green, and the top layer   
   records blue. Each stack of pixels directly records all of the light at   
   each point in the image.   
      
   Until now, all other image sensors have featured just one layer of   
   pixels, capturing just one color per point the image. To capture color,   
   the pixel sensors in CCD and CMOS image sensors are organized in a   
   grid, or mosaic, resembling a three-color checkerboard. Each pixel is   
   covered with a filter and records just one color-red, green, or blue.   
      
   That approach has inherent drawbacks, no matter how many pixels a   
   mosaic-based image sensor might contain. Since mosaic-based image   
   sensors capture only one-third of the color, complex processing is   
   required to interpolate the color they miss. Interpolation leads to   
   color artifacts and a loss of image detail. Blur filters must then be   
   used to reduce color artifacts. The use of blur filters adversely   
   affects  sharpness and resolution of the final image captured.   
      
   With its revolutionary process for capturing light, Foveon X3   
   technology never needs to compromise on quality, so you get sharper   
   pictures, truer colors, and fewer artifacts. And cameras equipped with   
   Foveon X3 technology do not have to rely on processing power to fill in   
   missing colors, reducing hardware requirements, simplifying designs and   
   minimizing lag time between one shot and the next.   
      
   Dollar for dollar, pixel for pixel, nothing compares to Foveon X3   
   technology.   
      
   http://www.foveon.com/article.php?a=69   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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