Resolution information in JPEG files (old software)

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  • Updated 6 years ago
  • (Edited)
Hi,

I'm used to give my textures files their "real size" in Photoshop adjusting the resolution in dpi...
until the CS4 this information was stored in the file and my 3D Package can read it correctly...
Since CS5 and still in CS6 this information is either written somewhere else, or in another way but my 3D program can't read it anymore...(even if Acrobat for example can find it)
Is it a way to store JPEG files as they were in CS4 ?
In the same Idea in Bridge when you display in the File propertie the real size (inches or cm) you get the right information if the file is CS4 and you get nothing with CS6

Many Thanks
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Jean Michel Le Goff

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  • sad and confused

Posted 6 years ago

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Chris Cox

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The resolution is still in the JPEG metadata, in EXIF and XMP.

Most likely your 3D program is extremely out of date and only reading resolution from the obsolete JFIF markers (JFIF was obsoleted by EXIF standards many years ago).

You need to update your 3D program, or contact the makers and ask them to update their JPEG code (that might be over 15 years out of date).
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Jean Michel Le Goff

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Hi,

I'm sorry, the 3D program is not so old, (about 5 years...) and they have promised me that the next version of the Program should be able to read the resolution information in any kind of JPEG...

But waiting this is it possible to ask PS CS6 to record the DPI information in an has been way ?

In the other hand, I have to remind you that in my post I mentioned that Bridge can't read the resolution either and is not able to display the "real size" of a file in the "file properties" window...
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Chris Cox

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No, Photoshop has not been writing the obsolete JFIF information for years, and will not be adding it back.
The resolution is already available in EXIF and XMP metadata in JPEG files.

Bridge is supposed to be able to read the EXIF and XMP metadata, but appears to have a bug in displaying that information.
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Jean Michel Le Goff

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Hi

If there is a bug in Bridge can you give me some contact information of a Bridge DevTram Member to try working on this?
I can have one or 2 other issue to manage as the wrong display of the definition of the pictures.
As you may have noticed the pictures ate handled on CQ5 and sometimes I get wrong informations either the definition the thumbnail even after rebuilding the cache in Bridge...

Let me know what I can do to go further...

Many thanks
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Chris Cox

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Just post details and a sample file in this forum (new topic, of course).
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Jean Michel Le Goff

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I've started this http://gsfn.us/t/3x34t