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Tafflad
Inspiring
January 31, 2024
Question

DNG thumbnails not showing in W10 folders

  • January 31, 2024
  • 1 reply
  • 5157 views
Not specifically LR, but as my DNG photo are all for LR, there may be someone here who knows how to resolve the problem.
Windows 10 and LR Lightroom version: 6.14 [ 1149743 ] 

If I go to a Windows 10 folder - all of the jpeg files with have a thumbnail  (as do png, tiff etc)
Very few DNG files will have a thumbnail (usually none)

I have installed Microsoft raw image Extension .... v3 no difference
Have followed the steps to kill thumbnail cache, delete it, and restart explorer ... all jpeg thumbnails rebuild (slowly) but not DNG.
Have also followed the tip to uncheck 'always shows icons, never thumbnails'The advice is to click on teh top button 'apply to folders'  but I can't do that as that is greyed out.  (pic attached)
 
 
 
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    1 reply

    johnrellis
    johnrellis
    Legend
    January 31, 2024

    Which app or exact camera model produced the DNGs?  If LR created the DNGs, which command (Convert Photo To DNG, Enhance, Photo Merge)?

    T
    TaffladAuthor
    Inspiring
    February 1, 2024

    My phone creates DNG files directly  ..  my camera has to have the raw files converted and I use ADOBE DNG converter to do that.

    Just did a test and showed something I had not realised before.

    File saved to Desktop ..... and it has the correct thumbnail.

    When I move file to a sub-folder  of My_Pictures  is arrives there without a thumbnail.

     

    LR identifies the RAW file whether on desktop or in a my_pictures folder

    Noticed another anomaly .... on my phone the selection is simply to output 'RAW' files.

    They arrive on PC as filename.DNG

    I just opened file with Mediainfo and it reports it as an invalid tiff ?  (see attached)

     

    johnrellis
    johnrellis
    Legend
    February 3, 2024

    On another forum it advises to download the Adobe DNG Codec for windows ... but the link:

    http://www.adobe.com/support/downloads/detail.jsp?ftpID=5495

    is a dead one.

    Do I need to install that Codec ?


    Adobe stopped supporting its Windows File Explorer codecs many, many years ago. When I was running Windows 10 (as recently as a year ago), I don't recall issues with DNG thumbnails in File Explorer, nor can I find any relevant reports here.

     

    Perhaps you have the very old Adobe codec installed or a codec from a third party that got installed years ago that's buggy with respect to newer DNGs. Unfortunately, it's very hard to get a list of the File Explorer image codecs that are installed (as opposed to video codecs).  You could Google for how to uninstall all File Explorer image codecs.

     

    Given that some DNGs do display in File Explorer, that would rule out problems with File Explorer settings for particular folders.

     

    You could try Ardfry Image's DNG codec, which appears to be still maintained. It's got a free trial. Years ago I had good experience with their codecs but have no idea how well-maintained they are now.

     

    If you don't want to buy a codec, you might have to bite the bullet and upgrade to Windows 11.

     

     

     

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