50mm wide-aperture standard lens (35mm equivalent: 75mm when
used with a Nikon DX-format SLR).

Large maximum aperture of f/1.4.

Advanced optical design minimizes flare and chromatic aberration.

SWM (Silent Wave Motor) for fast, quiet autofocus.

Two focus modes: M/A (manual-priority autofocus) and M (manual focus).

IF (Internal Focusing) design for fixed lens length.

Non-rotating front element allows use of circular polarizing filters and
lens-mounted flash accessories.

Focus ring does not rotate during AF operation.