TagsFromFile deletes preview in DPP from .CRW files

[Archive]

[Originally posted by harryg on 2010-01-11 02:55:19-08]

I take pictures in RAW on a Canon 5D and 50D, then convert to .jpg files which I geotag using GPicSync and the .gpx file from my Garmin. Successfully used Exiftool GUI to transfer the GPS data from the .jpg to the .CRW files (one at a time). Last photo session produced 600+ pics, so I wrote a script using exiftool 7.47:

exiftool -TagsFromFile source.jpg dest.crw

The .CRWs taken by the 5D and not modified by DPP lost the preview picture when viewed in DPP 3.7, the .CRWs taken with the 50D and those from the 5D that I had post-processed with DPP did not. Surprisingly, I can see the preview in ZoomBrowser, but not in DPP (same file). In DPP, those 5D .CRW files not post-processed in DPP and modifid by exiftol, the preview is black.

What did I do wrong?  What is the correct syntax to just extract the GPS data without disturbing anything else.

[Archive]

[Originally posted by exiftool on 2010-01-11 12:51:00-08]

You shouldn't be copying all tags from a JPG to a CR2.
Instead, you should copy only the GPS tags:

Code:

exiftool -tagsfromfile source.jpg -gps:all dest.cr2

or you can do this for an entire directory with one command
(assuming the JPG's and the CR2's have the same name:

Code:

exiftool -tagsfromfile %d%f.jpg -gps:all -ext cr2 DIR

where DIR is the name of the directory containing
the images.

Or, alternately you could use exiftool to do the geotagging:

Code:

exiftool -geotag file.gpx -ext cr2 DIR

- Phil