Lightroom Classic 10 catalog size

Community Beginner ,
Oct 27, 2020

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After upgrading to LR Classic 10, my catalogs went from about 8-20 MB each to 918MB!!! Just the LR.cat file, not the previews.

That's a HUUUUGE change and rather detrimental to my workflow. Is there any way to fix this?

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Lightroom Classic 10 catalog size

Community Beginner ,
Oct 27, 2020

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After upgrading to LR Classic 10, my catalogs went from about 8-20 MB each to 918MB!!! Just the LR.cat file, not the previews.

That's a HUUUUGE change and rather detrimental to my workflow. Is there any way to fix this?

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Oct 27, 2020 0
Advocate ,
Oct 27, 2020

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Please post your Operating System and version. What is the number of photos in your catalog? How many catalogs are you using?

While that is a huge change, that is not a huge catalog. I have 180,000 photos referenced in my catalog and the file is 2.16GB. The .lrcat file size did not change with the upgrade to LrC V10. I'm not sure how a catalog could be as small as 8MB. I created a new blank catalog and the .lrcat file is 1.57MB. It will grow quickly as image files are imported.

Kenneth Seals

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Oct 27, 2020 0
Community Beginner ,
Oct 27, 2020

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I know some will criticize this method, but it works well for me -- I create a seperate catalog for each job. This allows portability, better backups and multiple people to work on different jobs on different computers at the same time. 

So for me, a job might only have 50 images in it, hence a small catalog. Even better, if I make a few changes to cropping, toning, etc, I previously could just move a little 8MB or so file over to my backups to record the changes. 

Now with LR10, that file is 918MB no matter what.

 

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Oct 27, 2020 0
Advocate ,
Oct 27, 2020

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That doesen't sound right. 

I'm just leaving for the day, but when I have the chance, I will add 50 images to the new V10 catalog and post the results. I will also try converting a small V9.4 catalog with 50 images and convert that to V10.

My system is Win 10 Pro.

Kenneth Seals

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Oct 27, 2020 0
Community Beginner ,
Oct 27, 2020

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I'm using OS X 10.14

 

Here are screenshots -- first is a catalog of about 400 images that was converted to LR10, it went from 8MB to 918.

Second is a brand new catalog created in LR10 that contains 64 images....it is also >900MB.
So as far as I can tell, LR10 is causing my catalog file size to inflate by 100x 

 

Screen Shot 2020-10-27 at 12.26.44 PM.pngScreen Shot 2020-10-27 at 12.27.03 PM.png 

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Oct 27, 2020 0
LEGEND ,
Oct 27, 2020

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Hard to imagine. If you open the 8.1MB catalog, does it have the same number of images, and the same images, as the 918MB catalog? I ask because it seems as if the assumption is being made that these are the same catalog ... they may be or they may not be and so confirmation is needed.

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Oct 27, 2020 0
Community Beginner ,
Oct 27, 2020

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yes same number of photos.

In first screenshot you can see LR.lrcat at 8.1MB which is the LR9 catalog

then LR-v10.lrcat which is 918MB

Only difference is I selected 'upgrade to V10' when I opened the old catalog in LR10. No new data was added.

 

Second screenshot shows a catalog made from scratch in LR10 with 64 images and the catalog is >900MB. 

 

I'm guessing thaat maybe Adobe has a new sort of catalog that is just a base 900+MB file. Which is ridiculous and detrimental to my workflow, storage, etc. I'm also guessing that many users might never notice this because they are housing many jobs/shoots in one catalog that is already over 900MB and therefore not seeing an increase.


All this is on a 2018 MacBook Pro OS X 10.4.6, latest version of LR10 downloaded from my CC account. I've been using Lightroom since version 2.0 so I feel quite familiar with it and that I'm not confusing previews with the actual .lrcat file (unless they are baking previews into that file now or something new).

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Oct 27, 2020 0
Enthusiast ,
Oct 27, 2020

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Mac OS 10.14.6

I have both LR9.4 and 10 running. 10 is not useable because of the slowness but the upgraded catalog is the same as what I am running on 9.4. Your mention of catalog size got me checking my catalog. Both catalogs stayed at 1.3GB but the Previews file shows a huge difference. 9.4 previews is 21.23GB while the 10 previews is 52.5GB. I wonder if this is part of the problem make 10 so slow it is not usable.

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Oct 27, 2020 0
Community Beginner ,
Oct 27, 2020

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My guess is that because your catalog was already >900MB, you are not being subjected to a 'minimum catalog size'?

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Oct 27, 2020 1
Adobe Community Professional ,
Oct 27, 2020

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Definitely something weird going on.

What happens if you open the old catalog in v10 and it does the data migration again?

 

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Oct 27, 2020 0
Community Beginner ,
Oct 27, 2020

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Migrating from V9 to V10 is what got me from 8MB to 918MB

 

Thanks for those reporting on Windows it is not doing that -- maybe just a Mac bug or something but I'm happy that seems to indicate it's not some new 'minimum catalog size' that Adobe implemented!

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Oct 27, 2020 0
LEGEND ,
Oct 27, 2020

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On my Windows 10 20H2, a brand new catalog is lees than 2MB. I imported a dozen photos, its now 3MB. So I would think this is a Mac issue.

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Oct 27, 2020 1