The X20 is a substantially upgraded re-working of the X10, Fujifilm's previous flagship enthusiast compact. The biggest changes over the X10 are the adoption of the X-Trans color filter pattern from the company's mirrorless cameras, along with an LCD added to the optical viewfinder to allow shooting information to be overlaid. A faster processor and on-chip phase detection elements deliver fast focusing while the addition of a 'Q' quick-menu button improves the camera's usability.