Lightroom CC 2015.7: Smart Previews missing for some synced photos

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  • Problem
  • Updated 2 years ago
  • Not a Problem
  • (Edited)
After updating to Lightroom CC 2015.7 / LR 6.7 Smart Previews were missing for some synced photos, even after finishing syncing:


After selecting all photos on All Synced Photographs and choosing Library > Previews > Build Smart Previews from the menu the numbers align again:


Confusing that LR said all synced photos were synced but not all of them had Smart Previews as synced photos has to have Smart Previews built before they can be synced. Right?
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anssik

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  • confused, concerned

Posted 2 years ago

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Photo of Victoria Bampton - Lightroom Queen

Victoria Bampton - Lightroom Queen, Champion

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That's the expected behavior.

For syncing, Lightroom builds smart previews on the fly and then deletes them once they're uploaded, as it assumes you don't want to keep them (otherwise you would have chosen to build them yourself).

If you've chosen to build smart previews, either in the Import dialog or menu command, then it keeps them indefinitely and uses them to upload to LRM.
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anssik

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I didn't know that. My bad, then. Thank you Victoria!

It wasn't obvious to me that syncing, that requires Smart Previews to be built, doesn't mean Smart Previews need to be kept on Lightroom.

I'm assuming that any adjustments made to synced photos without kept Smart Previews won't trigger LR to rebuild any Smart Previews, right?
(Edited)
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Victoria Bampton - Lightroom Queen, Champion

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Correct.
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anssik

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I think I would like an option to keep those Smart Previews and not disregard them after syncing. Could that be implemented?

I keep my photo files on external hard drives and really like the ability to access them, edit them and export them even when on-the-go via Smart Previews.

Main reason I add photos to Collections and use them via Collections instead of Folders panel is to get them synced and via Smart Previews have offline usage when my external hard drives are not connected to my laptop.

Should I make a new thread and mark it with Idea?
Photo of Victoria Bampton - Lightroom Queen

Victoria Bampton - Lightroom Queen, Champion

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Just build them manually before you sync, and you get the same result.
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anssik

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Yes but that's one unnecessary step. Having an option to never delete Smart Previews for synced photos would be easier to understand and manage – any photo I've added to sync to Lightroom Mobile and Web would have the Smart Preview on the laptop as well.