[Digikam-users] 2 DNG questions

Gandalf Lechner gandalf.lechner at univie.ac.at
Thu Jan 8 17:48:56 GMT 2009


since I like the idea of a generic raw format, I played a bit with the DNG 
converter in digikam and observed two things I would like to ask about.

1) The DNG files produced by the converter from my Canon CR2 raw files are 
smaller in size, even with full size JPEG preview embedded. Typical size 
differences are 13 vs 10 MB. So I wonder if I loose data in the conversion - 
is there some compression going on? 

2) Some metadata get lost in the conversion, like ISO setting and lens focal 
range, and the camera name changes from "EOS Kiss Digital X" to "Canon "EOS 
Kiss Digital X". Is the loss of metadata due to my digikam settings or a 
limitation of the current implementation of the converter?


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