I use Dropbox with automatic camara upload. I use the App "Camera FV-5". This creates a JPG and a DNG photo file and stores both of these in the DCIM/100_CFV5 folder. When synchronizing via WiFi, only the JPG file is synchronized. If I change the storage location to DCIM or DCIM/Camera, that does not matter. I think that the problem is possible due to the name of both files eg: IMG_161.JPG and IMG_161.DNG with the same date and time or due to the size difference 735 kB versus 23.2 MB It is strange that the previous month went well. In my Dropbox folder there are several DNG files that month. The only way is to manually transfer at home via USB.
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