The GH5s is a recent model that features in the current product line-up of Panasonic. In contrast, the XF10 has been discontinued (but can be found pre-owned on ebay ). There has not been a direct replacement model for the XF10 from Fujifilm. Further information on the features and operation of the XF10 and GH5s can be found, respectively, in the Fujifilm XF10 Manual (free pdf) or the online Panasonic GH5s Manual.