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JürgenMa
JürgenMa
Known Participant
December 22, 2018
Answered

After conversion to Lightroom Classic CC .CR2 files from a LR4 catalogue are marked as corrupt

  • December 22, 2018
  • 2 replies
  • 712 views

I think the problem arose already when my catalogues were updated to LR6. All CR.2 files in a catalogue from 2012 were marked as faulty. The miniatures still can be seen, but there is no way of working with the images. Just now I found an original copy of the LR4 catalogue saved on an external hard disc drive stored away a long time ago and never touched since then. When I tried to open the catalogue, LR Classic CC started right away to update it to the new version - and the same problem appeared. All .CR2 files taken in 2012, developed in LR4 and not touched since then are marked as illegible or corrupt. PhotoShop CC doesn't open them either. Corel Paint Shop Pro on the other hand finds no irregularities, opening them without any problem. Is there any way to solve this enigma?

This topic has been closed for replies.
Correct answer elie_dinur

I have four copies of the files on different drives, but Lightroom does not accept them, it's always the same. And the oldest copies I experimented with today were definitely stored at a time that Lightroom still was able to read them.


So you did not save backup copies of the ORIGINAL CR2s before you hacked the  metadata. There is a lesson there.

Adobe has supplied  since 2013 a free plugin to do what what you wanted Plug-ins for Adobe Photoshop Lightroom | Adobe Labs but it requires converting the CR2s to DNGs. If no version of LR6 or later can read the files, I rather doubt that recent versions of the DNG Converter can do it, so that might be a lost cause now. Maybe you can find a legacy version of the DNG converter.

Or, if you at least backed up your serial numbers, you can reinstall Vs. 4 or 5   Download Photoshop Lightroom   and use the included DNG conversion. Maybe the plugin will rewrite the crop metadata to make the files compatible with newer releases.

But saying the LR update caused your Raws to corrupt is like saying that a new edition of the phone book caused your phone to explode. Especially since you now say that you tinkered with the wiring.

2 replies

dj_paige
dj_paige
Legend
December 22, 2018

You need to find the backups of these photos, and then copy the backups to the original location, thereby overwriting the corrupted files with a (hopefully) uncorrupted backups.

JürgenMa
JürgenMaAuthor
Known Participant
December 22, 2018

I have already tried to create a new catalogue importing the original files, but the result was the same. I don't believe that there was any hadware problem because only the .CR.2 files are problematic, other files from the same period (2012-2016, when I used the Canon Powershot G12 and, in parallel, Panasonic cameras) are without any fault. The .CR2 files were developed without any problem in LR 4 and 5. From LR6 onwards they have been classified as corrupted. As .RW2 files from the same time, but saved and developed in separate catalogues, show no sign of corruption, the problem cannot lie in hardware problems.

dj_paige
dj_paige
Legend
December 22, 2018

I have already tried to create a new catalogue importing the original files, but the result was the same.

But this is not the same as using backups of the original files. If you have backups, you don't need a new catalog.

I don't believe that there was any hadware problem because only the .CR.2 files are problematic, other files from the same period (2012-2016, when I used the Canon Powershot G12 and, in parallel, Panasonic cameras) are without any fault.

Sorry, but corrupted files are always due to some hardware malfunction somewhere. There is no other known mechanism to corrupt files. If the photo file are stored in different locations (which sounds like what you are saying), then sectors of a hard disk can be bad, while the rest of the hard disk works fine.

Just Shoot Me
Just Shoot Me
Legend
December 22, 2018

LR NEVER touches the original files. During a LR Catalog update/upgrade LR NEVER accesses the image files that are imported into the database file that IS the LR catalog.

So if you have files on one of the drives connected to your computer that you have imported into LR, any version, and they are showing as corrupted it was NOT LR that corrupted them.

They became corrupted by some type of Hardware Fault. More than likely a failing hard drive or could be RAM problems

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