The shoulder bag is mainly suitable for interchangeable lens cameras and SLRs, with internal dimensions of 150 mm wide, 100 mm long and 130 mm high. The Panasonic FZ82D is a bridge camera, generally bulkier and with a different shape to these types of camera. As a result, this bag is probably not suitable for the FZ82D.
Unfortunately, rather flat lenses fit in there, 50mm or pancakes. One part is made of neonprene, drizzle was no problem, but really rain... I couldn't say now, unfortunately.