Tiff Tag 700

I have an application which reads tiff files that I receive from a customer. My customer upgraded Photoshop
to CS from v6 (I think).

Now my application can't read the file indicating that
found an "Unknown field with Tag 700 (0x2bc).

First, what is this tag?

Second, is there a way I can get my customer to save
his files without this tag?

TIA

"newUser" wrote in message

I have an application which reads tiff files that I receive from a customer. My customer upgraded Photoshop
to CS from v6 (I think).

Now my application can't read the file indicating that
found an "Unknown field with Tag 700 (0x2bc).

First, what is this tag?

Second, is there a way I can get my customer to save
his files without this tag?

If possible, upload and point us to a link for one of these files. I'd like to see the header.

Are these multipage Tiffs? What's the bit depth? Have you tried Irfanview to display/convert them?

Rick

Rick wrote:

"newUser" wrote in message

I have an application which reads tiff files that I receive from a customer. My customer upgraded Photoshop
to CS from v6 (I think).

Now my application can't read the file indicating that
found an "Unknown field with Tag 700 (0x2bc).

First, what is this tag?

Second, is there a way I can get my customer to save
his files without this tag?

If possible, upload and point us to a link for one of these files. I'd like to see the header.

Are these multipage Tiffs? What's the bit depth? Have you tried Irfanview to display/convert them?

Thanks for the reply Rick....

I have uploaded:
http://home.earthlink.net/~bhatasub107/01_orig.tif
http://home.earthlink.net/~bhatasub107/02_savedByIrfanview.t if

The files are 8-bit grayscale. Tried your suggestion and Irfanview does get rid of the tag. But if possible I'd rather not go through the extra process if I can get my customer to provide the files without the extra tag.

Thanks...

"newuser" wrote in message

Rick wrote:

"newUser" wrote in message

I have an application which reads tiff files that I receive from a customer. My customer upgraded Photoshop
to CS from v6 (I think).

Now my application can't read the file indicating that
found an "Unknown field with Tag 700 (0x2bc).

First, what is this tag?

Second, is there a way I can get my customer to save
his files without this tag?

If possible, upload and point us to a link for one of these files. I'd like to see the header.

Are these multipage Tiffs? What's the bit depth? Have you tried Irfanview to display/convert them?

Thanks for the reply Rick....

I have uploaded:
http://home.earthlink.net/~bhatasub107/01_orig.tif
http://home.earthlink.net/~bhatasub107/02_savedByIrfanview.t if
The files are 8-bit grayscale. Tried your suggestion and Irfanview does get rid of the tag. But if possible I'd rather not go through the extra process if I can get my customer to provide the files without the extra tag.

Is your customer saving layered tiffs? If so, do you need access to these layers? If not, have them flatten the images before saving to tiff, or have them "Save a Copy" in the File/Save dialog. You might also have them select the
option to 'ask before saving layered tiff files' (Edit/
Preferences/File Handling).

Rick

"newuser" wrote in message

Rick wrote:

"newUser" wrote in message

I have an application which reads tiff files that I receive from a customer. My customer upgraded Photoshop
to CS from v6 (I think).

Now my application can't read the file indicating that
found an "Unknown field with Tag 700 (0x2bc).

First, what is this tag?

Second, is there a way I can get my customer to save
his files without this tag?

If possible, upload and point us to a link for one of these files. I'd like to see the header.

Are these multipage Tiffs? What's the bit depth? Have you tried Irfanview to display/convert them?

Thanks for the reply Rick....

I have uploaded:
http://home.earthlink.net/~bhatasub107/01_orig.tif
http://home.earthlink.net/~bhatasub107/02_savedByIrfanview.t if
The files are 8-bit grayscale. Tried your suggestion and Irfanview does get rid of the tag. But if possible I'd rather not go through the extra process if I can get my customer to provide the files without the extra tag.

Is your customer saving layered tiffs? If so, do you need access to these layers? If not, have them flatten the images before saving to tiff, or have them "Save a Copy" in the File/Save dialog. You might also have them select the
option to 'ask before saving layered tiff files' (Edit/
Preferences/File Handling).

No, these are flat images.

"newuser" wrote in message

"newuser" wrote in message

Rick wrote:

Is your customer saving layered tiffs? If so, do you need access to these layers? If not, have them flatten the images before saving to tiff, or have them "Save a Copy" in the File/Save dialog. You might also have them select the
option to 'ask before saving layered tiff files' (Edit/
Preferences/File Handling).

No, these are flat images.

Ok. What application are you using to read these files? Have you checked for updates?

Rick

"Rick" writes:

"newuser" wrote in message

"newuser" wrote in message

Rick wrote:

Is your customer saving layered tiffs? If so, do you need access to these layers? If not, have them flatten the images before saving to tiff, or have them "Save a Copy" in the File/Save dialog. You might also have them select the
option to 'ask before saving layered tiff files' (Edit/
Preferences/File Handling).

No, these are flat images.

Ok. What application are you using to read these files? Have you checked for updates?

Googling for "TIFF tag 700" turns up some insight, e.g. < http://archives.java.sun.com/cgi-bin/wa?A2=ind0312&L=jav a-imageio-interest&F=&S=&P=1574>,
where a 3-layer file saved as TIFF wound up with tag 700. Looking for "tag 700" on Adobe's Web site turns up more, e.g.

In TIFF files, the XML Packet containing XMP metadata is pointed to by an entry in the Image File Directory (IFD). That entry has a Tag value of 700, as shown in Table 1.1, "TIFF IFD Directory Entry for XML Packets".

at < http://partners.adobe.com/asn/developer/xmp/download/docs/XM PEmbedding.pdf>

So it looks like tag 700 is used to point to XMP metadata.

--
-Stephen H. Westin
Any information or opinions in this message are mine: they do not represent the position of Cornell University or any of its sponsors.

You shouldn't have to do anything -- TIFF readers are supposed to ignore unknown tags. (that is very explicit in the TIFF specification)

If your reader software doesn't like it, then that would be a major bug in your reader software.

Chris

In article
wrote:

I have an application which reads tiff files that I receive from a customer. My customer upgraded Photoshop
to CS from v6 (I think).

Now my application can't read the file indicating that
found an "Unknown field with Tag 700 (0x2bc).

First, what is this tag?

Second, is there a way I can get my customer to save
his files without this tag?

TIA