CHDK_VER_TAG      569 modules/dng.c      get_tag(IFD_0, CHDK_VER_TAG)->offset = (int)camera_info.chdk_dng_ver;
CHDK_VER_TAG      570 modules/dng.c      get_tag(IFD_0, CHDK_VER_TAG)->count = strlen(camera_info.chdk_dng_ver) + 1;