Thank you, most importantly reliable focus tracking (face, eye and animal) and good iso performance. Video functionality is less important but nice to have, I'm mainly a stills guy. My photography is moving from landscape to events, people and wildlive. For landscape the Pentax K1 is sublime, but the focus tracking is sub par so I need another tool for the job. Currently I'm looking at the A7R III, not sure about the iso handling though, do you think it will suite my needs?