Sony has launched its latest 4K projectors aimed at the home cinema market. The two new SXRD units are rated for native 4K resolutions and have the same X1 processor found in many high-end BRAVIA TVs. The higher-end model has an ARC-F lens for image quality that goes right to the edge of the window it throws.
https://www.notebookcheck.net/Sony-announces-new-home-theater-grade-projectors-with-native-4K-and-a-Dynamic-HDR-Enhancer.533134.0.html