Two good reasons to convert raw to dng:
- new cameras are often properly recognized by RT or dt with a long delay, so dng can be very helpful.
- with digiKam you can’t write metadata in raw files, not even tags. This means that if the images are accidentally moved with other programs, the entries are lost. But in the dng can be written without problems. This is the main reason for me to convert raw to dng.
But I have become more careful, and will keep all original raw from now on.