The multiple functions of a user interface enabling three-axis control of effects etc. are allocated to two dials on the top panel, unique but with a restrained style, and a wheel on the back panel. Users experience an unprecedented level of intuitive operation and sense of directness. The advanced UI keeps the display of functions on the body to a minimum, highlighting the flat and simple structure, successfully dispelling the equation “advanced functions = complex exterior characteristics” of standard cameras. This next-generation, mirrorless interchangeable-lens camera has such a simple design that it seemingly could not be all-in-one.