How to trigger LR to throw standard previews?

This is NOT intelligent overviews, but previews of library-module. There is no 1:1 previews, but standard previews.

Situation: I use an external SSD as 'disk external catalogue', with my LR catalog and previews on it, in order to plug it in 2 different computers that I use also.

Due to a poorly thought-out import synch-folder that I found myself with side effects and much too many images and previews, so I decided to go back to the last backup good catalog.

So in theory I should have 100 GB of excess saw the version of catalog scrapped, rendered useless for the restored version of catalog.

How to trigger LR to throw away them?

I tried to trigger the generation of standard previews of files, which now contain pictures much less than before, hoping that this would get rid of them. To my astonishment said LR to rebuild almost all previews for the files selected. Why - they should have been here already? Usually, when a version of Catalog backup is restored as current (same name, same clichés), extracts are recognized?

Once this is completed a night later, I still have the same size of the previews folder catalog!

Any ideas?

Before you suggest that I have delete all previews and leave the LR to rebuild from scratch: this is a catalog of 2, 2 GB size, 150'000 images and 190 GB of previews (more than 146 GB of previews smart, although they are not my concern at the moment). This operation will last nearly a week to rebuild... so I would prefer something more simple.

Thanks, Cornelia

Hi Cornelia - long time...

Cornelia - I wrote:

Do I understand correctly that LR would never get rid of previews, at least I have remove an image in the catalogue

Yes, you understand properly - the only way to get Lr to remove standard previews is to remove the photo of the catalog (not sure of the part of the cancellation).

Cornelia - I wrote:

If the images are already missing the older catalog (through a restore from backup), your PreviewExporter Plugin would find their?

Well, if the photos have been removed from the catalog, then PreviewExporter will find previews corresponding (there are only glimpses of the selected photos). (if the pictures are in the catalog, but missing disc, then it will find them). Interesting, even if idea - a function to remove all foreign previews - ' twould be easy enough to make, just has not yet done.

Rob

Tags: Photoshop Lightroom

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