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Xmp file creation does not work

New Here ,
May 24, 2024 May 24, 2024

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I try to create xmp files for all dng files in my catalogue. This is not to discuss whether it's necessary or not. The story behind it is a little bit longer.

 

What I already checked and tried:

CTR+s (within library and dev tool)

Save metadata within menu structure 

Activate checkbox to save xmp files always

Check whether creation of xmp files is paused

 

I also checked my whole SSD to find xmp files. Without success.

 

I am working with dng. Raw files are deleted on most cases. 

 

Any suggestions what I may have overseen?

 

 

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Engaged ,
May 24, 2024 May 24, 2024

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For DNG files, XMP "data" is stored inside the DNG file itself.  So, if you were looking for a sperate XMP file you won't find one.  If you already knew that, how were you verifying that the XMP data was not beomg saved?   

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Participant ,
May 24, 2024 May 24, 2024

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I believe you will find that if you modify the properties of the DNG files and designate them as reead-only before you modify them in Lightroom or Camera Raw you will find that the XMP file will be created as you desire.

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LEGEND ,
May 25, 2024 May 25, 2024

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[This post contains formatting and embedded images that don't appear in email. View the post in your Web browser.]

 

"if you modify the properties of the DNG files and designate them as reead-only before you modify them in Lightroom or Camera Raw you will find that the XMP file will be created"

 

That doesn't work anymore, unfortunately:

 

johnrellis_0-1716690143354.png

 

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Participant ,
May 25, 2024 May 25, 2024

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That's odd. I tried it on my system before I replied. Windows 11, all Adobe apps up to date. It seemed to work. I guess I must have done something wrong.

 

UPDATE: I just went back to the DNG file that I made read-only and updated it. The XMP file date updated, but there was an ACR file created. I use LrC mostly, so I'm not all that familiar with Camera Raw. And, I'm getting older. Please explain what I am seeing.

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LEGEND ,
May 25, 2024 May 25, 2024

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Hmm, I tried the same test on my Windows 11 LR 13.3 (the first one was on Mac), and I get the same error.

 

I had never heard of a .acr file, but according to these threads, it's a binary sidecar file used to store masking information for the photo:

https://community.adobe.com/t5/photoshop-ecosystem-discussions/question-does-anyone-understand-the-a...

https://community.adobe.com/t5/bridge-discussions/new-acr-file-after-update/td-p/12477333 

 

I can't find any formal documentation about it at helpx.adobe.com, but in the past, Adobe hasn't kept the Camera Raw information up-to-date with respect to sidecars.

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Community Expert ,
May 26, 2024 May 26, 2024

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I had never heard of a .acr file, but according to these threads, it's a binary sidecar file used to store masking information for the photo:

 

Correct. Lightroom writes that same data into XMP (when saving metadata to the files), but Camera Raw uses a separate ACR file for better performance. Lightroom does understand the ACR file format.

_______________________________________________
Victoria - The Lightroom Queen - Author of the Lightroom Missing FAQ & Edit on the Go books.

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