Lightroom Classic: Problem with loading large NEF files stored on QNAP NAS

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  • Updated 2 years ago
  • (Edited)
Dear all from Adobe,

I have my photos stored on QNAP NAS, the library is on MacBook Pro (2016) SSD . 

My photos are in NEF format from my Nikon D850. Size of the NEF file is more than 50MB. 

If I import photos from NAS the photo previews in Library are corrupted - they have coloured horizontal strips - clear symptom of missing data. 

If I open the corrupted photo in individual photo preview mode in the Library, the LR downloads missing data from the NAS and picture is displayed correctly. Preview stays corrupted. If I magnify the picture in the individual photo preview  mode, LR downloads missing data and corrects also the preview.The same happens also in Develop mode. 

This is happening in all ways of connection to the NAS - ethernet cable, local wi-fi, VPN connection. This problem also does not appear if I import the same photos from local SSD in my MacBook Pro. Screenshot of LR with corrupted pictures in the Library view:

I have experienced this problem only with photos in D850 NEF format which are above 50MB. If I reduce size of photos in the camera setting to smaller size, which is 30MB, the problem does not appear.

I had already two conversation on that issue with your agents, but the only outcome was, that I have to use local or external HD.

After many testes and experiments with photos import and checking files in different software I came to the clear conclusion:

  • photo files on NAS are not corrupted, 
  • transfer protocol does not cases the corruption
  • there must be bug in LR in loading files larger that 50MB which causes problem in building preview in the Library 
  • LR can rebuild the preview but only after it loads missing data of the photo after the photo is magnified in the single picture preview mode
Having access to my photos remotely is essential for me. Carrying external drive is not an option. I believe I can not be the only photographer on the world who needs to develop the photos remotely. 

I checked trial versions of DxO and Capture One. Both softwares work with photos stored on NAS without any problem. It is hard to accept, that Adobe would be unable to fix this issue.

I would very much appreciate if people responsible for LR Classic CC development and maintenance would firmly review the issue and include fix of that in earliest possible update.

Best regards,

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Eduard Palisek

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  • frustrated, that my favourite software does not meet my requirement anymore.

Posted 2 years ago

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Photo of Dwight McCann

Dwight McCann

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I feel your pain.  Adobe seems to have a LOT of trouble with various large photos.  Thanks to you I will be looking at some additional options for some of my corrupted files. Adobe doesn't seem to have much expertise with using GPU assisted processing ... for years various problems have been solved by the famous 'turn off the GPU cure.' 
Photo of Just Shot Me

Just Shot Me

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Make sure both the NAS and OS X is set to use SMB as the network protocol and not the Apple AFP.
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Eduard Palisek

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Thank you! I did so, but it does not solve the problem. On top of that SMB is much slower than AFP.
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Eduard Palisek

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If somebody from  Adobe follows the conversation, would he/she be so kind and react?