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How to know how large your photo selection in Library is?

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Nikon Nick

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Hi fellow Lightroom fans

I could not find anything on this subject on the internet.. Hope someone knows..:

I want to export a large selection of photos to another disk, but i need to know how large the size of the files of that selection is alltogether, or know how large they will be alltogether after an export.
I cannot select folders in windows to see the size, because the photos are chosen by number of stars and by color.

Thank you
 
You can't easily do so, which is why I wrote this free plugin FolderSize

John
 
Thank you John, i tried right away! Very helpful tool.

Only, it seems that under approximately 3000 photos it works every time, but above about 3000 photos in 1 tree-set of folders it keeps returning this (i tried about 50 folders with subfolders and different amounts of photos in it):

[ An internal error has occurred: [string "menu_Foldersize.lua"]:65: attempt to perform arithmetic on a nil value ]

I also tried restarting, restarting the plugin, and with and without selecting photos within a foldertree.

Thanks!
 
I've looked at that line in the code and it seems to imply Lightroom can't find the file size of a photo. Anyway, I just uploaded an update to version 2.4 that should prevent that error occurring.

John
 
By the way, the error might also imply photos are missing.
 
Thank you very much for your very fast replies and updating of the plugin.

Multiple folders that dit give the error, now do get a result with the updated plugin.
But the strange thing is that a few larger folders and the the original selection that i was searching a solution for (23000 photos i want to place on another disk) still gives the same error message.

I am now trying to match previews/xmps with photos that are said to be missing (although i thought your plugin would now maybe skip missing images?).

Thanks
 
If you can figure out the exact circumstances, I'd be happy to look at the code again.
 
I want to export a large selection of photos to another disk, but i need to know how large the size of the files of that selection is alltogether, or know how large they will be alltogether after an export.
The size of the exported images can be the same as the original but they don't have to be. It depends on your choices in the export menu. When your originals are RAW files and the exported images JPG than it will be much less.
 
The size of the exported images can be the same as the original but they don't have to be. It depends on your choices in the export menu. When your originals are RAW files and the exported images JPG than it will be much less.

Correct. And when the exported files are TIFF, they may be a lot bigger (especially when you choose 16 bits/color TIFF)...
 
The size of the exported images can be the same as the original but they don't have to be. It depends on your choices in the export menu. When your originals are RAW files and the exported images JPG than it will be much less.
My question was too short in that respect:
1 How can i see what size my photo selection is
2 If that is not possible, is there a way to see the size on disk that will result from a certain export setting before you export
 
If you can figure out the exact circumstances, I'd be happy to look at the code again.
Sorry for the late reply.
I repaired and deleted all the missing photos, which was 'due' anyway. Now your tool calculated one whole disk (63000 photos).
When i selected only the 3 star photos (23000 according to Lightroom) the recount gave a result of approximately 61000 (in this and the calculation before i looked at counts without virtual copies). The same results repeated after restarting the computer and recounting.
Then i selected the grid of the 3 star photo selection, but that gave the same result.
Then i selected all the sub folders under the main folder (which itself does not contain photos) and this gave 96000 photos as a result and 2.5TB as size, larger than the disk is.

Calculating a few seperate folders gave the same results as Lightroom calculated, with seemingly good size calculations.
 
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