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xmp files on mac

New Here ,
Feb 02, 2018 Feb 02, 2018

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I use Lightroom on an iMac with the catalog and photos stored on external hard drive.  The Raw (NEF actually) XMP (sidecar) files are stored as files that require opening MIcrosoft Messenger (with password) to open.  Is this appropriate?  Could it end up being a problem?  Any thoughts?  Thanks,  John

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Community Expert , Feb 03, 2018 Feb 03, 2018

Is that with a single click or double click? If the latter, that simply suggests to me that somehow the .xmp file extension is associated with Messenger, i.e. that's the app that your OS has been told to open when you double-click on an xmp file. I've just checked mine and I see it's associated with ON1 Photo Raw, which means that ON1 did that when it was installed. But anyone opening an xmp file in Finder presumably only wants to inspect the contents, so changing the default to something like t

...

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LEGEND ,
Feb 02, 2018 Feb 02, 2018

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What software is telling you that? The XMP files are utilized by Lightroom and Photoshop when they are present. When they are not present then Lightroom reads the settings from the catalog.

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Community Expert ,
Feb 02, 2018 Feb 02, 2018

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Lightroom by default reads and writes from the Catalog File and this continues when you are working with Lightroom. At first import of images into Lightroom if there is an xmp sidecar present Lightroom will read the information from the xmp file. However subsequently Lightroom reads and writes to the Catalog file.

If you select the option to "Automatically write changes into xmp" then Lightroom will also write changes to the xmp sidecar for raw files and into the file header of jpeg, tiff or dng files. This can also be done by choosing the option from the menu bar Metadata > save metadata to file.

Screen Shot 2018-02-02 at 8.46.14 PM.png

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5, Lr 6.5, PS 24.7,; ACR 15.5,; Camera OM-D E-M1

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New Here ,
Feb 02, 2018 Feb 02, 2018

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Thanks Jim.  When I go to the folder on the external HD where the raw files are stored, the accompanying xmp file looks like this:  "2017_untitled_008.xmp." When I click on it I get this:Screen Shot 2018-02-02 at 4.59.25 PM.png

Does that make sense?  Thanks.

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Community Expert ,
Feb 02, 2018 Feb 02, 2018

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Could you specify what application created the xmp file ?

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5, Lr 6.5, PS 24.7,; ACR 15.5,; Camera OM-D E-M1

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New Here ,
Feb 02, 2018 Feb 02, 2018

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The xmp files are created by Lightroom when I import the raw images from my

Nikon d500. I am just concerned that this reiteration of the files may not

be good long-term. Thanks for your interest and help.

John

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Community Expert ,
Feb 03, 2018 Feb 03, 2018

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Is that with a single click or double click? If the latter, that simply suggests to me that somehow the .xmp file extension is associated with Messenger, i.e. that's the app that your OS has been told to open when you double-click on an xmp file. I've just checked mine and I see it's associated with ON1 Photo Raw, which means that ON1 did that when it was installed. But anyone opening an xmp file in Finder presumably only wants to inspect the contents, so changing the default to something like textedit.app would make more sense.

Do a "Get Info" on any xmp sidecar file and see what's set as the default app, and if needed change it via the drop down list.

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New Here ,
Feb 05, 2018 Feb 05, 2018

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Thanks Jim - I think that you have the answer.  I appreciate your help very much.  I tried the "get info" and, indeed, it selected Microsoft messenger as a default.  Not sure what the correct app might be, and maybe don't need one, but this clears up why MM was selected.

Thanks again,  John

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Community Expert ,
Jan 25, 2022 Jan 25, 2022

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I am getting .xmp versions of my Illustrator files suddenly on Mac... everything up to date

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