The Sony RX10 III supports a maximum video resolution of 3840 x 2160 pixels. That's over four times the video resolution of the most frequently found video resolutions of 1920 x 1080 pixels (which is also supported by this camera). This Sony digital camera also support a video resolutions of 640 x 480 pixels and 1280 x 720 pixels. A video resolution of 3840 x 2160 pixels is equivalent to 4K Ultra HD video. This has four times the detail of Full HD video.
A 3840 x 2160 pixels video resolutions is actually the best supported video resolution amongst all compact cameras that have been on the market for a similar time to this camera.
Amongst comparable types of camera the worst supported video resolution is 640 x 480 pixels.