Lightroom: How do I prevent import of duplicate photos from different sources?

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  • Updated 7 years ago
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When I import existing fotos in Lightroom 3.4 from a different source, they will not be recognized as double and would be importet...

And in different folders will that create a chaos...
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Peter Müller

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Posted 7 years ago

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Rob Cole

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Do you have the "Don't Import Suspected Duplicates" box checked?

To remedy try the duplicate finder plugin: http://www.lightroom-plugins.com/Dupe...
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Peter Müller

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Hi Rob,

thanks for your answer. But the "Don't Import Suspected Duplicates" box exists only in Version 2 ?? In Version 3.xx you see at the import screen either only NEW Picurtes or ALL. Then all pictures found as duplicates are marked out.

But if I use the direct way from my camera to import photos, but next time a portable disc or a card reader, all fotos will not recognised as dupes...

OK, with a plug-in it would be a workaround.

Thank you for the link, I ́ll have a look...
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TK

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Peter, LR3 also has the option to not import suspected duplicates.

It's a tick box on the right hand side in the "File Handling" tab.

You are not using the compressed import dialogue, are you? Expand it, if you only see a thin import bar.
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Peter Müller

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Yes, you are right... I had the "File handling" dialogue compressed. But the box is checked anyway.

Has no one else this problem? OK, I use to import my fotos in 95% directly from my camera. But sometimes, when I am on holidays or anywhere, I use my laptop to copy my fotos every day as a backup. And if I use these backup fotos to import from portable disk, they would not be recognized as doubles. I think, the reason is the different source.
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Rob Cole

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I *think* Lightroom uses "original file name" to determine if they're duplicates, i.e. you can import the same photo again if it has a different filename than it did when last imported. Is this what you're running into?
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Peter Müller

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No. I didn`t rename the fotos. I didn ́t touch them in any way. Same filename, date, size....
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Jim Wilde

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To be classed as a duplicate, the file-name must be the same as the file-name as originally imported into Lightroom, the EXIF capture date and time must be the same, and the file length must be the same. If any of these differ, it's not classed as a duplicate.

Source folder should not matter.

From the workflow description I'm having trouble understanding where the 'doubles' come into play.....are these by chance files you've previously copied 'as a backup' on your laptop, imported (maybe renaming on import), and then not cleaned off the laptop. So when you go to import after your next trip the old files are still there but now with a different name, thus they get imported? If that's the case then maybe a workflow rethink is needed.
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Peter Müller

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OK, I just tested the filename as part of the recognition. Yesterday I imported some fotos into Lightroom. Now I changed the filename from DSC_2307.NEF to DSC_2307test.NEF. I plugged in my camera and startet to import the still existing fotos on the camera SD-Card. The duplicate recognition works. The (camera-) foto DSC_2307.NEF would not importet - even if the filename has changed. Correct!!

But now I am confused. I just tested some fotos that I copied to harddisk and another SD-Card and used a cardreader. But the recognition works fine. ???

Is it possible, that a software-change in Version 3.41 (I updated yesterday from 3.4) fixed this problem??

Well, I will do some further tests, but I think, my Question ist solved...

Thank you all... ;)