spacecadet Posted October 13, 2018 Share Posted October 13, 2018 Had this problem for a while and thought I'd run it past the forum. I always build my 1:1 previews on import, but LR seems to lose track of some of them over time and has to rebuild. It's not down to a discard preference, I don't have that set. Any thoughts? Additionally, deliberately discarding 1:1 previews doesn't seem to work. It doesn't actually reduce the size of the calatogue data file by much. Link to comment Share on other sites More sharing options...
Vincent Lowe Posted October 13, 2018 Share Posted October 13, 2018 I don't know a lot about Lightroom but I imagine the previews are held in a separate cache file, as does Bridge, so it shouldn't affect the data file. Link to comment Share on other sites More sharing options...
Matt Limb Posted October 13, 2018 Share Posted October 13, 2018 LR in my understanding only 'keeps' 1:1 preview for a period of time to prevent the files from becoming massive and then issues with backing up. It is not unusual to have to rebuild previews on older collections. Link to comment Share on other sites More sharing options...
spacecadet Posted October 13, 2018 Author Share Posted October 13, 2018 2 hours ago, Matt Limb said: LR in my understanding only 'keeps' 1:1 preview for a period of time to prevent the files from becoming massive and then issues with backing up. It is not unusual to have to rebuild previews on older collections. There's a setting to discard previews after a certain time but I have it set to "never". Link to comment Share on other sites More sharing options...
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