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bjashton
Participating Frequently
February 4, 2019
Question

Tethered vs import - doesn't recognise duplicates

  • February 4, 2019
  • 3 replies
  • 802 views

I did a shoot tethering Lightroom to my Canon 1DX.

In the tethering options I made sure I selected the "Filename" as the naming convention for downloaded files.

For technical reasons some files didn't get transferred so I did an import of the memory card.

The import had the option "Don't import suspected duplicates" enabled. However it is not detecting photos downloaded during the tethering as duplicates.

Is this a bug? Or am I doing something wrong?

    3 replies

    E
    ErikPallHansen
    Participant
    January 26, 2025

    As of Lightroom Classic 14.1.1, this appears to still be a bug. I'm using a Sony A1.

     

    The only difference between the .ARW file imported via tether and imported via my SD card is that the latter has "-2" appended to the filename.

    D
    drtonyb
    Legend
    January 27, 2025

    When  I do Tethered Capture with my Nikons, there isn't a copy saved in-camera, only one file saved to the PC, so there is never a duplicate issue.

     

    Is the Sony different?

     

    JohanElzenga
    Community Expert
    JohanElzengaCommunity Expert
    Community Expert
    January 27, 2025

    Apparently. If you do not have an image on your memory card, then you cannot import it and compare import and thetering.

     

    -- Johan W. Elzenga
    cmgap
    Community Expert
    cmgapCommunity Expert
    Community Expert
    February 5, 2019

    +1 on this being a bug.

    J
    Community Expert
    Jao vdLCommunity Expert
    Community Expert
    February 5, 2019

    This is probably a bug. My guess is that the camera writes the files quicker to the memory card than it transfers to the computer and this causes a slight difference in original file creation time which Lightroom interprets as the files being different.

    B
    bjashtonAuthor
    Participating Frequently
    February 5, 2019

    That's interesting. I will investigate if the camera and laptop clocks are in sync.

    It's quite likely the laptop is picking the time up from the Internet so that should be correct. However they probably isn't the case for the camera.

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