Sony announces the a7R III Full Frame Mirrorless camera
Sony has announced their new full frame mirrorless camera. The a7R III features a 42.4 MP sensor linked to an updated BIONZ X processing engine, offering a native ISO range of 100-32000. Autofocus has been improved and 4K video is available from the full width of the sensor. Of interest for underwater use is that battery life has been more than doubled over that of the a7R II.