1:1 previews discarted

[Argosfoto]

When I choose to discard 1:1 previews after 1month, no other small preview is created? Why?

Would be smarter to leave a smaller preview in place, wouldn't it?

Thanks

Marcos

[AxelMatt]

Sorry, but I don't exactly understand your question.

Normally if you dicard previews after a month the previews were deleted and recreated at the moment when they needed.

Why should a smaller preview should be created?

[Argosfoto]

Thanks for your help . The thing is, when discarding the 1:1 preview, no other smaller preview is created, we are left with no image!

[JohanElzenga]

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@Argosfoto wrote:

When I choose to discard 1:1 previews after 1month, no other small preview is created? Why?

Would be smarter to leave a smaller preview in place, wouldn't it?

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Smaller previews are left in place. Lightroom shows you one of the so-called 'standard-sized previews' when you view an image. That is a pyramid of previews ranging from a small thumbnail to 'loup view size'. The 1:1 preview you mention is something extra. You can build it on import, or Lightroom will build it when you zoom in to 100%. The 1:1 preview is not part of the standard-sized previews, so if you automatically discard them after a certain time, then the standard-sized previews are not discarded.

Please note that if you manually delete the 'previews.lrdata', then you delete all previews, not only the 1:1 previews!

[Argosfoto]

Thanks for your answer . I always create 1:1 views on import, discarding them after 30 days. After that many views disappear - nothing is left in place - after this period. I never threw away "previews.lrdata". 

I've been working like this for many years. I don't understand what could be happening. 

[JohanElzenga]

Maybe 'previews.lrdata' is corrupted, so what you can do is actually throw away the 'catalogname previews.lrdata'. Lightroom will rebuild the previews and that may also solve that problem.