The
mount section, shown in the reference left side view illustrating the names of each part, can accommodate interchangeable lenses. With an interchangeable lens attached, the angle of the
mount section can be changed from an upward-tilted state as shown in left side view 1 illustrating the operation of the
mount section, to a downward-tilted state as shown in left side view 2 illustrating the operation of the mount section, allowing for tilt and shift. The mount section can extend and retract from a minimally
closed state as shown in left side view 3 illustrating the operation of the mount section, to a maximum open state as shown in left side view 4 illustrating the operation of the mount section, allowing the
flange back to be adjusted according to the
focal length of the interchangeable lens mounted on the mount section.