The inner-focus AF system uses a stepping motor to drive the focusing group of lens elements for silent and fast autofocus. The metal exterior gives a sense of premium quality and robustness, and the aperture ring and focus ring have been designed for optimum operability. The lens is also weather and dust resistant and operates at temperatures as low as -10°C, making it an ideal choice for outdoor photography.
Read: Full Specifications (on Fujifilm’s website)
Note that some product images show the optional metal “vented” lens hood.