Panasonic Lumix GH5 review: Hail the 4K king
The camera world has been moving at a slow pace over the last couple of years, with only small gains to be made. If you were to compare the GH5's image quality to the earlier GH4, for example, then the gains aren't that significant. But that's besides the point.
When it comes to pro 4K video capture there's little else to compare; Great stills camera too; Abundant autofocus options and capability (including 6K Photo; Great EVF and LCD
Sony A99 II gives high-end users a lot to consider; Some autofocus slip-ups (bright lighting; In particular; Causes issues; Chunky for a mirrorless camera