The new Sony Cyber-shot RX10 II has huge boots to fill, as the original RX10 superzoom is one of the best cameras we've ever seen. To up the ante, Sony has piled on a lot of new features, with the splashiest being 4k video. Like the flagship A7R II and compact RX100 IV, the RX10 II now captures 3,840 x 2,160 video by reading out the entire 1-inch, 20.2-megapixel sensor. It then oversamples at 4K or 1080p to maximize sharpness and minimize moire and anti-aliasing. To top it off, you can shoot in nearly full HD at a stellar 240fps, or up to 1,000fps at an effective resolution of 800 x 270. Sony points out that it would take about 80 seconds to play back just 2 seconds of video shot at that speed.