Christopher James Huff <cja### [at] earthlinknet> wrote:
> Well, I think all the important LZW patents have expired now, so aside 
> from PNG there's LZW compressed TIFF, which got slightly better 
> compression than PNG on most of the images I tested, and is quite a bit 
> more flexible.

  There's no one single way of making lzw encoding (even though the result
is decodable with any regular lzw decoder). Some programs do a better job
than another. You should definitely not trust some random image editor to
give you the best possible png compression ratio because they usually don't.
  Run the png through pngcrush and advpng and then compare it to the tiff.

-- 
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}//  - Warp -

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