[Image-SIG] Tiff not reading dpi

Dennis Shimer dshimer at gmail.com
Thu Jan 11 10:42:23 CET 2007

I have a tif image that at least 3 different programs can see the
correct dpi information in
(Irfanview, Gimp, Alchemy) but when I read the image using pil 1.6

print im.info  -  shows only {'compression': 'raw'}
dpix,dpiy=im.info['dpi']  -  gives an exception

and if I set it explicitely then using

Irfanview sees the new dpi.
Gimp complains that "resoultion units are meaningless"
and Alchemy sees no DPI info at all but doesn't complain.

Is there any reason that there is so much inconsistancy in results, or
a way to write dpi with pil that would be universally recognized?

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