documentation, but something else, with just the first 8 byte the same.
Added CMDID_GET_IMAGE_HEADER to get the exposure values.
Dump the additional image information into the pnms as comment.
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@3472 67ed7778-7388-44ab-90cf-0a291f65f57c
e67157bede