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sfmole
sfmole
Participant
May 26, 2018
Answered

How to extract the original raw file from dng

  • May 26, 2018
  • 2 replies
  • 7868 views

How do I extract the original raw file from the dng file. I have imported with the selection to embed the original raw file in the dng file.

    This topic has been closed for replies.
    Correct answer JP Hess

    I have never done it. However, in the standalone DNG converter there is an "Extract" button at the bottom of the dialog. When you click on it you can choose a folder that contains DNG files containing embedded raw images. After you choose the folder, the DNG converter will extract the raw files.

    2 replies

    Rob_Cullen
    Community Expert
    Rob_CullenCommunity Expert
    Community Expert
    May 26, 2018

    I see two possibilities:

    If the DNG files resulted by using the "Copy as DNG" when Importing the originals into the LR catalog- then the 'Original raw' file was converted to DNG, and does not contain the 'Original raw' embedded.

    If you used the Adobe DNG Converter program to convert raw to DNG, AND had the option checked to "embed the original"  then the Converter can be used to extract the original.

    Only in scenario-2 will you be able to restore the camera raw (NEF, CR2, etc)

    Regards. My System: Windows-11, Lightroom-Classic 15.0, Photoshop 27.0, ACR 18.0, Lightroom 9.0, Lr-iOS 10.4.0, Bridge 16.0 .
    patrickh27764550
    patrickh27764550
    Inspiring
    August 16, 2022

    Hi there:

     

    In my case, I'm using Adobe Camera Raw to take 2 or 3 Canon CR2 files and mereging them into an HDR.  Are the original CR2s inside the DNG in my case?  The DNG file is about 120MB while the two CR2 files combined are under 80MB.

    Rob_Cullen
    Community Expert
    Rob_CullenCommunity Expert
    Community Expert
    August 16, 2022

    TBMK -The DNG file created by the HDR merge (and Panorma merge) is not a pure 'raw' file but rather a special type of TIF file that can be edited similarly to a raw.

    This would account for the apparent increase in file size (if you are thinking that the HDR should be closer to 80MB.)

     

     

    Regards. My System: Windows-11, Lightroom-Classic 15.0, Photoshop 27.0, ACR 18.0, Lightroom 9.0, Lr-iOS 10.4.0, Bridge 16.0 .
    JP Hess
    JP HessCorrect answer
    Inspiring
    May 26, 2018

    I have never done it. However, in the standalone DNG converter there is an "Extract" button at the bottom of the dialog. When you click on it you can choose a folder that contains DNG files containing embedded raw images. After you choose the folder, the DNG converter will extract the raw files.

    sfmole
    sfmoleAuthor
    Participant
    May 26, 2018

    Jim, thank you. I downloaded the Digital Negative Converter and was able to extract the original RAW files from the DNGs in which I had embedded the RAWs. I have been converting all my RAWs to DNGs for years and fortunately also embedding the original files. Now I'm starting to use Iridient Developer and their X and S Transformers since it's reputed to have a much better RAW conversion engine than that found in ACR or LR. My workflow has been to import DNGs into LR, process there and then finish in Pshop if necessary. However, Adobe in it's infinite wisdom seems to have neglected to include any reconversion capability in either ACR or LR in the CC versions which is all I use now. Thanks again for your help.

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