Sony α7 III vs Sony α7C

The Sony α7C is essentially a more compact version of the Sony α7 III. Being newer, it offers a few improvements, including an upgraded autofocus system with a better AF tracking algorithm, plus a longer battery life and unlimited video recording time. That said, the α7 III has better ergonomics, with more custom buttons and dials, along with a significantly larger viewfinder and dual SD card slots. The α7 III also has a tilting screen, while the α7C has a fully articulated screen, one of which may suit you better than the other depending on your needs and personal preference.