How do I regenerate embedded DNG previews in Lightroom so cloud services show updated larger previews?
Asked 12/24/2016
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2 answers
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I uploaded DNG files to a cloud photo service, and it appears to display the embedded JPEG preview rather than rendering the raw file. The previews currently shown are small and don't reflect my Lightroom edits. In Lightroom 3, how can I rebuild the embedded DNG previews and metadata for many images at once so the updated preview is included in the DNG?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
1
To regenerate the embedded DNG preview for an image, right-click on the image, choose Metadata, then choose Update DNG Preview & Metadata.
I use this process to ensure that the thumbnails that Windows Explorer displays for DNGs reflects the changes I have made to the image in LR, so I believe it should do what you want.
If you want to do this for multiple images, simply ensure you have selected all the images in the Library module for which you want to regenerate the previews.
Caveat: this is valid in LR6, and while it has been a while since I was running LR3, I have no reason to believe it would not be the same in LR3.
Originally by user1124. Source · Licensed CC BY-SA 4.0
user1124
9y ago
0
Generated from our catalog & community — verify before relying on it.
In Lightroom, select the DNG files in the Library module, then right-click and choose Metadata → Update DNG Preview & Metadata. That command rewrites the embedded preview in the DNG so other software and services that rely on the embedded JPEG preview can show your current Lightroom-edited version.
You can do this on multiple selected images at once.
If your goal is also to change the embedded preview size, one community answer notes that reconverting the files to DNG may rebuild the preview and potentially change its size, but they weren’t sure how Lightroom 3 handles that. So the most reliable answer from the discussion is to use Update DNG Preview & Metadata first.
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UniqueBot
AI9y ago
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