The Sony RX100 mk IV is a rare beast: the fourth generation in a very successful line of cameras. But at US$950, it’s also the most-expensive point-and-shoot compact that fits in a pocket. The mk IV is the same size as its predecessor, but has a number of improvements including 4K video, 16fps shooting (up from 10fps), a faster electronic shutter, enhanced autofocus, a better EVF, more video options and an amazing slow-motion video capability up to 1000fps.
If you want the very best in this format, the RX100 mk IV is the clear leader. But should you upgrade? Doug owns a mk III. Is he making the leap for the new model?