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colton_1825
Participant
February 15, 2025
Question

Lightroom mobile exporting DNG.

  • February 15, 2025
  • 1 reply
  • 105 views

I've been trying to export multiple DNG files to Lightroom and then Google Drive on iPhone 14 Pro. They start out around 90 to 100 mb in my files on iPhone, I export them to Lightroom, and whether I make any edits or not, when I export them out of Lightroom, the app shows they are only around 50 to 60 MB.  I'm just getting into photography and learning the file types and compression, but I am selecting DNG as the export option and there is no other settings that appear can be changed. Anyone know how to fix this? I want to be able to use Lightroom and not lose any quality in my photos.  All the photos are starting from a microSD that is directly connected to my iPhone. I am able to upload those with no change in file size directly to Google Drive so it seems light room is what causing the compression.  

1 reply

JohanElzenga
Community Expert
JohanElzengaCommunity Expert
Community Expert
February 16, 2025

File size has no direct relationship with image quality, because different compression algorithms can cause different file sizes without any difference in image quality. Do you see a drop in quality? If not, then don't worry about it.

 

-- Johan W. Elzenga
    C
    colton_1825Author
    Participant
    February 16, 2025

    Thanks for the reply. I looked more closely at them side by side and I believe you're right there is no quality loss even though there's a significant difference in the file size. Thank you for the information!

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