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Unfortunately, Leica  D-LUX3 files either do not contain embedded preview, or we do not know how to extract it.

We have only single D-LUX3 sample on hand, could you please upload several samples somewhere (dropbox, google drive, WeTransfer) and send us link to that (

The 'Use external JPEGS as thumbnail if no internal preview present' option looks broken in some cases and, unfortunately, D-LUX3 is exact this case. To be fixed in next beta (today or tomorrow).

Another problem is that XMP ratings/labels are not shown for files w/o thumbnails. To be fixed too, in same new beta.


Alex Tutubalin/FastRawViewer team