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evikne71
evikne71
Known Participant
January 22, 2019
Answered

Rebuild smart previews in the cloud

  • January 22, 2019
  • 1 reply
  • 1142 views

I have edited a lot of smart previews in LR Classic without the originals connected. The photos are synced to the cloud in different shared galleries. I guess the quality could have been even better if I could rebuild the smart previews in the cloud from the originals. So is it a way to force them to rebuild?

This topic has been closed for replies.
Correct answer Jao vdL

The smart previews do not need rebuilding. They will not change based on any develop settings. They are downscaled raw data that is compressed with a jpeg-like algorithm (though not exactly jpeg as it retains the original bit depth). The only way to get higher quality rendering is if you upload the actual raw originals. This cannot be done from Lightroom Classic but you can do using the Lightroom CC desktop application. It will recognize that the raw file you are uploading is one it already has and place the raw file right with the smart preview online.

1 reply

J
Community Expert
Jao vdLCommunity ExpertCorrect answer
Community Expert
January 23, 2019

The smart previews do not need rebuilding. They will not change based on any develop settings. They are downscaled raw data that is compressed with a jpeg-like algorithm (though not exactly jpeg as it retains the original bit depth). The only way to get higher quality rendering is if you upload the actual raw originals. This cannot be done from Lightroom Classic but you can do using the Lightroom CC desktop application. It will recognize that the raw file you are uploading is one it already has and place the raw file right with the smart preview online.

    evikne71
    evikne71Author
    Known Participant
    January 23, 2019

    Thank you for the answer!

    But in this thread I was told that edited smart previews would make better exports if they were updated from the originals first. Maybe they misunderstood my question slightly. Of course I will get better results when exporting from the originals. What I actually meant was if the smart previews would be better if they were updated from the originals after editing. And according to your answer they wouldn't? And I assume that smart previews behave similarly either they are stored locally or in the cloud?

    J
    Community Expert
    Jao vdLCommunity Expert
    Community Expert
    January 23, 2019

    OK. So the smart previews themselves will not get any better, even if I connect to the source files?


    No indeed. Smart previews are always exactly the same. They are independent

    of what edits you did. They are always rendered directly from the source

    raw data and there is no influence of any develop settings you have done.

    On Wed, Jan 23, 2019 at 5:18 AM ernstv21515445 <forums_noreply@adobe.com>

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