XCD 3.4/75P adopts a linear stepping motor and a lighter, smaller focusing lens group, which means the focusing lens group can quickly reach the focusing position and achieve a precise stop, resulting in more responsive focusing. The XCD 3.4/75P utilises a linear stepper motor and a lighter, smaller focusing lens group. The linear stepping motor allows for more precise control of the focusing lens group, enhancing focusing accuracy, while the lighter, smaller focusing lens group enables faster focusing. When paired with X System or V System medium format digital cameras that support PDAF (Phase Detection Autofocus), you will appreciate the swift, quiet, precise, and flexible focusing experience.