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Marcos Issa
Participating Frequently
March 19, 2021
Answered

1:1 previews discarted

  • March 19, 2021
  • 3 replies
  • 325 views

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

Correct answer JohanElzenga
@Marcos Issa 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?


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!

 

3 replies

JohanElzenga
Community Expert
JohanElzengaCommunity ExpertCorrect answer
Community Expert
February 7, 2022
@Marcos Issa 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?


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!

 

-- Johan W. Elzenga
M
Marcos IssaAuthor
Participating Frequently
February 8, 2022

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. 

Argosfoto
JohanElzenga
Community Expert
JohanElzengaCommunity Expert
Community Expert
February 8, 2022

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.

 

-- Johan W. Elzenga
    M
    Marcos IssaAuthor
    Participating Frequently
    February 7, 2022

    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!

    Argosfoto
    A
    Community Expert
    AxelMattCommunity Expert
    Community Expert
    March 19, 2021

    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?

     

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