While both cameras are PL mount, shoot HD and record on Sony SXS Pro memory Cards, the F5 has a 2k and F55, a 4k sensor. These CineAlto 4k camcorders support recording in XAVC MPEG-4 AVC/H.264 format, MPEG-4 SStP, and industry standard XDCAM 50mbps 4:2:2. Both camcorders can be used with the AXS-R5 RAW recorder, with the F5 recording up to 120fps and the F55 recording up to 240fps as 4k RAW data. More details soon.
More details on Sony’s pages.