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Keep your DNGs! I don't see any reason why you couldn't export all 30k photos to jpg using the export dialog built into Lightroom. Store them in a different folder than your DNGs for faster browsing, but still retain the raw files just in case you need to edit something in the future. If you like browsing in Lightroom, but it's running too slow, you could ...


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This is not warning, but required action because LR Classic work with new/updated format of catalogs. And AFAIK you can't avoid this action and skip the step. You can continue to use LR 2015 with old format of catalog. But if you need LR Classic you must migrate the catalog. And you can migrate only once because after the migration the catalog will be in ...


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