Crop area (defined by appropriate tag) can't fit into active area (defined by other tag). Active area should be enlarged by one pixel in x and y direction
try this
exiftool -activearea="24 344 2760 3992" <dng_filename>
In my case, it did the trick
Someone correct these values in the code please
BTW: isn't it better to use cr2 file right from the camera ? It's compressed and smaller than uncompressed dng
Do you use this version of exiftool?:
http://www.sno.phy.queensu.ca/~phil/exiftool/The cr2 file from the camera isn't recognized by ACR directly, and the DNG files can be read directly
in ACR (at least the DNG files produced by CHDK on my canon powershot a720), so it would speed up my workflow.
Also, DNG is a kind of generic format and CR2 is proprietary.
The camera can take CR2 Raw pictures much faster than DNG though, so it's a trade off. For action photography, CR2 is probably the way to go and then they can be converted to DNG later on optionally.
