This interchangeable lens camera is faithful to the user, with a built in APS-C size sensor equal to a single-lens reflex camera. Canon developed a grip to fit the hand and shutter button position and angle are easily reached by the index finger, for better grip and usability, but with a compact size. Golden ratio proportions and the best layout of elements balance form and function. For easy operation with either thumb, it has a touch UI with functions only on the left, right and bottom of the screen. Inheriting the interface design of the single-lens reflex EOS, it is easy for users who have grown accustomed to the single-lens reflex setup.