LibTiff Mailing List

If you run PDFTeX, which uses the libtiff library, and try and include a
TIFF file generated by Photoshop 6 you get a pop-up dialog:

"Unknown field with tag 37724 (0x935c) ignored"

I did a little research, and found the following information:

> Photoshop 6.0 uses 4 more tags that are not defined in the TIFF v6
> specification. They are: tSubIFD (330), tJPEGTables (347), tImageSourceData
> (37724), and tAnnotations (50255). tSubIFD is documented in the TIFFPM6.
> pdf file as a PageMaker extension. tAnnotations are discussed earlier in
> this chapter, the TIFF tag does not include the first 12 bytes of the
> Annotation. The details for the remaining tags are in the tables at the end
> of this section.
> tImageSourceData is a null-terminated string identifying the type of data in
> the tag followed by the data for the tag. See the tagged resources found
> earlier in this document.

That description is found on page 42 of Adobe Photoshop 6.0 File Format
Specification which was found at:

http://partners.adobe.com/asn/developer/gapsdk/download/ps6ffspecsv2.pdf

The tag is not part of the TIFF v6 spec, but it is documented by Adobe.  How
do I go about getting someone to change the TIFF libraries so that this no
longer generates a warning dialog?

    Jeffrey M\kern-.05em\raise.5ex\hbox{\b c}\kern-.05emArthur
    a.k.a. Jeffrey McArthur          ATLIS Publishing Services
    http://members.home.net/jeffmcarthur/


AWARE [SYSTEMS]		Imaging expertise for the Delphi developer
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	LibTiff Mailing List TIFF and LibTiff Mailing List Archive January 2002 Previous Thread Next Thread Previous by Thread Next by Thread Previous by Date Next by Date Contact The TIFF Mailing List Homepage This list is run by Frank Warmerdam Archive maintained by AWare Systems	Thread 2002.01.20 06:25 "TIFF files from Photoshop 6", by Jeffrey Mcarthur 2002.01.21 05:37 "Re: TIFF files from Photoshop 6", by <ldk@hyphen.com.au> 2002.01.20 06:25 "TIFF files from Photoshop 6", by Jeffrey Mcarthur If you run PDFTeX, which uses the libtiff library, and try and include a TIFF file generated by Photoshop 6 you get a pop-up dialog: "Unknown field with tag 37724 (0x935c) ignored" I did a little research, and found the following information: > Photoshop 6.0 uses 4 more tags that are not defined in the TIFF v6 > specification. They are: tSubIFD (330), tJPEGTables (347), tImageSourceData > (37724), and tAnnotations (50255). tSubIFD is documented in the TIFFPM6. > pdf file as a PageMaker extension. tAnnotations are discussed earlier in > this chapter, the TIFF tag does not include the first 12 bytes of the > Annotation. The details for the remaining tags are in the tables at the end > of this section. > tImageSourceData is a null-terminated string identifying the type of data in > the tag followed by the data for the tag. See the tagged resources found > earlier in this document. That description is found on page 42 of Adobe Photoshop 6.0 File Format Specification which was found at: http://partners.adobe.com/asn/developer/gapsdk/download/ps6ffspecsv2.pdf The tag is not part of the TIFF v6 spec, but it is documented by Adobe. How do I go about getting someone to change the TIFF libraries so that this no longer generates a warning dialog? Jeffrey M\kern-.05em\raise.5ex\hbox{\b c}\kern-.05emArthur a.k.a. Jeffrey McArthur ATLIS Publishing Services http://members.home.net/jeffmcarthur/

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2002.01.20 06:25 "TIFF files from Photoshop 6", by Jeffrey Mcarthur