cazalea[Seiko Moderator]
19570
I'm using a Sony RX-10 version 4
From Digital Photography Review
The Sony DSC-RX10 IV is s premium super-zoom bridge camera (DSLR-like form factor) with a 24-600mm equivalent F2.4-4 zoom lens and a 20MP 1"-type stacked BSI-CMOS sensor.
This sensor brings phase detect autofocus to the RX10 series, adding depth-awareness that is important for focusing long lenses. The camera is faster than its predecessor and can shoot at 24 fps with AF and auto exposure.
The processor is borrowed from the flagship Sony a9, which means excellent subject tracking. In short, this camera packs speed, AF ability and lens reach into a convenient package, not to mention 4K video. The RX10 IV offers a touchscreen that can be used as a touchpad for placing AF points with your eye to the finder or for selecting a point of focus in still or video mode. So is it the most capable all-in-one camera on the market? Perhaps.
Roughly $1600 USD
I guess this is what they mean by excellent subject tracking: