I've tried to use the Edit in-Open as Smart Object Layers in Photoshop, but only the first selected file opens in PS. I've also tried to open each raw file as a Smart Object separately.
By @kathyb36448023
That is unusual, Open as Smart Object Layers in Photoshop works on my Mac, so I am not sure what’s causing the problem on your side.
Recently, one possible cause of Edit In Photoshop not working was someone using one of the very new Snapdragon X Elite laptops that run Windows on an ARM processor instead of Intel. But if you are using a standard Windows PC with an Intel or AMD processor, that should not be the cause.
Have you tried the completely manual way? It takes a few steps, but it should always work.
1. If you want existing edits applied in Lightroom Classic to be visible in Photoshop, select both images in Lightroom Classic, and choose Metadata > Save Metadata to Files. This writes Lightroom Classic edits out to XMP sidecar files so that Adobe Camera Raw will see the edits from within Photoshop. (You never have to do this step when using the Photo > Edit In commands in Lightroom Classic, but again, I’m describing the fully manual way.)
2. Switch to Photoshop, and create a new document of the pixel dimensions you want. If you want it to match the uncropped raw images, set the new Photoshop document to those pixel dimensions. For example, if I am combining images from my camera that records 6000 x 4000 px images, I create a Photoshop document at 6000 x 4000 px.
3. In Photoshop, choose File > Place Embedded, select one of the files, and click OK. The file is placed through Camera Raw (click OK there to apply existing edits), and it’s added to the Photoshop document as an embedded Smart Object layer that displays the edits from Lightroom Classic.
4. Repeat step 3 for the other image. At this point, the Photoshop file should contain the two images as separate embedded Smart Object layers, and you can go on to combine them however you intended.
5. If you aren’t going to do anything with the default Background layer, you can delete it. That should reduce the Photoshop file size somewhat.
At this point, the Layers panel should equal what you are supposed to get when, in Lightroom Classic, you choose Photo > Edit In > Open as Smart Object Layers in Photoshop: There should be one raw Smart Object layer for each of the raw files you added, for two layers total in this example.
Advanced options:
If you want the Photoshop file to use less storage space, you can import the raw files as linked Smart Objects instead: In step 3, choose File > Place Linked instead of Place Embedded. Place Linked does not copy the actual raw files into the Photoshop document, but instead it refers back to the originals.
If you want to be able to send raw edits back and forth between the originals and the instances in the Photoshop documents, place them as linked Smart Objects, and in Lightroom Classic:
To send Lightroom Classic raw edits to linked raw Smart Objects in Photoshop, choose Metadata > Save Metadata to Files.
To have Lightroom Classic pick up raw edits made by double-clicking linked raw Smart Objects in Photoshop, choose Metadata > Read Metadata from Files.
This workflow is not completely reliable, and should only be used by someone who fully understands how to troubleshoot how Lightroom Classic and Photoshop each handle changes to metadata and previews.
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