メインコンテンツへスキップ

Lines in images when importing

コメント

5件のコメント

  • OddS.

    Alan Hearnshaw: I get purple lines through the files

    If I understand your post correctly, it implies Capture One is modifying image file content during transfer from capture media to computer disk.

    Can you compare a file on a SD card and the corresponding file imported to disk by Capture One to verify that it actually happens, or not?

    I have no idea what tools a Mac provides for checking file integrity, but it should be possible to calculate a checksum, say sha256 or MD5, for both files and compare the checksums.

     

    0
  • Alan Hearnshaw

    Good idea. For the longest time, I haven’t completed the import, because I saw the lines in the preview. I had confirmed before that the lines did appear in the imported files (and not just in the preview). 

    I shall shoot some photos today, complete the import, and perform a hash comparison. Will report back here. 

    0
  • Alan Hearnshaw

    OK. I did another import. Lines in the files. I performed a cksum against the original file on the SD card, and the file on the hard drive after import.

    Alans-MacBook-Pro 2022-05-12 % cksum DSC00880.ARW
    4294488223 21050368 DSC00880.ARW

    Alans-MacBook-Pro 100MSDCF % cksum DSC00880.ARW
    2279861340 21050368 DSC00880.ARW

    Although the files are the same size, they do indeed show a different checksum.

    0
  • OddS.

    > Alan Hearnshaw: different checksum

    If it wasn't for the fact that you have tried several SD cards, I would have suggested you try a new one, the shifted lines may be caused by corrupted media. It is puzzling that it is the same across SD-cards and card reader (the one in the camera or an external one).

    I think you should forward your findings to the support team. For completeness, you should include the checksum calculated on the very same image file on disk after a non-C1 transfer to show that that other method does not change the file.  Thus, three image files, three checksums calculated from original image file on SD-card, image file copy A on disk, transferred by C1 and from image file copy B on disk, transferred by a non-C1 method.

    Chances are that it is about hardware (media, cable, camera,...) rather than C1.

     

    0
  • Alan Hearnshaw

    Yes. I did do a manual copy of the file to the same folder, and ran the checksum. The same checksum was returned as on the SD card.

    At this stage, I think I've ruled out everything else but Capture One. If I import the same files using XNViewMP or Digikam, they import fine. In fact, that's what I'm doing right now. I import using XNView, keyword, and then get Capture One to synchronise the folder. Anything I try to import through Capture One gets corrupted.

    Strangely, I have also tried copying the files manually to my hard drive, and then getting Capture one to import (and move) them from there. The one time I tried that, it worked without corruption.

    I have created a support ticket, but I'm not expecting a quick response as they stated that their support team is in the Ukraine. They've got larger issues than my photos to deal with!

    In the meantime, I'll continue importing through other software.

    Thanks for your attention.

    0

サインインしてコメントを残してください。