Samsung NX 16-50mm f/2.0-2.8 S Series Zoom Camera Lens with OIS and UPSM (Black) Unique F2.0-F2.8 Aperture allows shallow depth of field with low aberration and edge distortion High Reliability with a splash and dust proof design iFunction button for convenient control without taking your eye off the shot High Speed Stepping Motor for fast and silent autofocus for stills and movies