Sony a7R IV is the 4th generation of the A7R series. It is a successor to the a7R III.
This product gets many new improvements. It has a 60 MP sensor that allows images in 26.2 MP resolution in APS-C crop mode. It sports 567 phase-detection AutoFocus points with 74% coverage. Moreover, it provides an improved grip and controls for better handling and ergonomics. What about networking and file-sharing? It uses USB 3.2 for faster transfer speeds, while its predecessor uses USB 3.1. Its Dual-band WiFi supports 5 GHz band. The hot shoe has a digital audio interface for an external digital microphone.