Image color problems

[Jason Sievers]

I have built a raster catalog and am display orthophotos in my MapServer application.  Some of my TIFF images are rendered with incorrect color.  Here is an example: http://www.co.linn.or.us/webmap/ELLAMaps1.0/badcolor.png.  This is an 8-bit TIFF input and MapServer outputs it as an 8-bit png.  It seems that the really dark (black or very close to it) pixels are rendered white by MapServer.  The original image does not have these white pixels.  I've read through the Raster HOW-TO and played with OUTPUTFORMAT but with no success.  Thanks for any help.
  Jason Sievers 
jsievers at co.linn.or.us 
Linn County GIS Department 
Albany, OR 97321  

 		
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