The GX80 is a recent model that features in the current product line-up of Panasonic. In contrast, the LF1 has been discontinued (but can be found pre-owned on ebay ). There has not been a direct replacement model for the LF1 from Panasonic. Further information on the features and operation of the GX80 and LF1 can be found, respectively, in the Panasonic GX80 Manual (free pdf) or the online Panasonic LF1 Manual.