https://techcrunch.com/2019/07/16/sonys-new-a7r-iv-camera-is-a-61-mp-full-frame-mirrorless-beast/

Sony unveiled the latest in its line of interchangeable lens mirrorless cameras on Tuesday, debuting the A7R IV, its top-of-the-line full-frame digital shooter aimed at pros. The new camera packs a walloping 61-megapixel sensor, and will retail for $3,500 when it goes on sale this September.

The camera’s image resolution is a “world first” for a 35mm equivalent full-frame digital sensor, Sony notes, and that’s not where the improvements on this successor to the wildly popular A7R III ends: The A7R IV also has 10fps rapid shooting with continuous autofocus and autoexposure tracking capabilities; 567 phase-detect autofocus points that cover 74% of the frame; real-time eye autofocus tracking for stills and movies, which can handle both human and animal subjects; 4K HDR movie recording without any pixel binning and with S-Log 2/3 support for editing (although without a 60p mode, as it caps out at 30p); ISO range of 100-32000 (and 50-102400 expandable); battery life of around 539 shots with the EVF or 670 shots without, and much more.