Lightroom mobile exporting DNG.

[colton_1825]

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.  

[JohanElzenga]

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.

[colton_1825]

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!