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fabiop29502929
Known Participant
January 23, 2018
Question

Problem in preview files - original raw Nikon d850

  • January 23, 2018
  • 2 replies
  • 1207 views

Hello everybody,

I found a problem importing some raw files from a Nikon D850 and I can't solve by myself.

What I did:

import in LR cc a shooting session, raw files. Files copied from external memory to disk, no errors.

After importing ask to generate 1:1 previews for all files

When i reopen folder to select images, I found few previews (only four on 800 files) like this:

(sorry for the R-rated image, it was a nude photoshooting)

The image seems truncated...

1) ARGHHH my new dslr Camera!

No, I tested it: the file is ok if opened with nikon software capture NX and it's ok.

2) So, my memory card has a problem!

No, I tried to open the same files copied inside lightroom, not a new copy from the external memory

So, there should something wrong with Lightroom...

1) Ahhh ok, it's only a preview problem, just rebuild it

NO! First of all exporting the image in jpg file have the same issue, so it's not only the preview

2) Well, there was a problem while importing the file...

Yes, I think so. Because if I reimport the same file (exactly the same, not a new one from the external memory) I found everything goes well.

Now, apart from asking lightroom team to investigate on this strange "bug" (?), my real problem is, how to adjust this folder with correct files? If I try to reimport in the same folder LR tell me that this is already imported. If I try to delete it the answer is the same.

The only way seems to import the files in another position... that is really uncomfortable for developing and future research.

As the problem is not in the previews, it seems completely useless to delete preview.lrdata files ecc... Is there a secret way to remove and substitute the single files in the LR db to let them work correctly?

Many thanks

Fabio

This topic has been closed for replies.

2 replies

dj_paige
dj_paige
Legend
January 23, 2018

These are hardware malfunctions somewhere that cause the corruption or truncation of the image.

All the attempts at deductive logic that you have done cannot negate the fact that Lightroom doesn't change the image portion of your original files.

Furthermore, you haven't considered the possibility that the corruption could be coming from the hard disk in your computer or from computer memory; and lastly I don't know for sure about Nikon Capture NX, but I believe it shows the JPG preview of the image which is often not corrupted even though the full RAW image is corrupted.

    F
    fabiop29502929Author
    Known Participant
    January 23, 2018

    Hi Dj,

    I was thinking about hardware failure too, but exactly the same copy of file (the same copy that lightroom itself has imported) is good if imported in other folder... so the file should be correctly written on the hard disk.

    Also for Nikon capture NX, I do not only opened the jpg preview but the image in full size also trying to elaborate it. And, as before, always from the exact same file in the hard disk.

    For these reasons, I don't think it's an hardware issue.

    Thanks!

    F
    fabiop29502929Author
    Known Participant
    January 23, 2018

    By the way, I'm running LR on good Imac with High Sierra macOS, it's really safe about the hardware failure... I hope

    Per Berntsen
    Community Expert
    Per BerntsenCommunity Expert
    Community Expert
    January 23, 2018

    Are you seeing this only in Library, or only in Develop, or in both?

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    fabiop29502929Author
    Known Participant
    January 23, 2018

    Hi Per

    Both in library and develop mode, and also in exported JPG files, like the original one would be corrupted. But it isn't...

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