[Digikam-devel] [Bug 211758] Saving TIFF-16 compressed using exiv2 0.18 shows odd results

[Andreas Huggel]

https://bugs.kde.org/show_bug.cgi?id=211758





--- Comment #24 from Andreas Huggel <ahuggel gmx net>  2009-12-16 05:34:43 ---
Marcel, Gilles,

For the first three of these tags, there is nothing wrong if digiKam writes
these [1].
For the ImageResources tag, exiv2 seems to use the wrong type, although I have
yet to find the specification. It's easy to fix in exiv2 if necessary. This tag
may contain information that the users want to keep (written by Photoshop), it
would be interesting to know if Photoshop still reads it with the changed type.

So these warnings are relatively harmless. They do not explain the corrupted
images that some users have encountered.

-ahu.


[1] TIFF 6.0 Specification, Section 7: "Other fields. TIFF readers must be
prepared to encounter fields other than those required in TIFF files. TIFF
writers are allowed to write optional fields such as Make, Model, and DateTime,
and TIFF readers may use such fields if they exist. TIFF readers must not,
however, refuse to read the file if such optional fields do not exist. TIFF
readers must also be prepared to encounter and ignore private fields not
described in the TIFF specification."

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