digiKam from trunk : Gphoto2 camera drivers always return all JFIF APP1 section from JPEG file when Exif metadata are require by camera interface.

Exiv2 do not support to parse Exif metadata from APP1 directily. This commit cut APP1 header (10 first bytes) to please Exiv2 with this data.

You can display now your Exif/Makenotes metadata in camera gui with all Gphoto2 camera, PTP camera are includes (tested with my Dynax5d).