Sony VCLECU2 12-16 MM,f/2.8 Petal Shaped Fixed Ultra Wide Converter for SEL16F28 and SEL20F28 For SEL16F28 and SEL20F28 Alpha E-Mount Lenses Further Widens Lens Perspective Maximum Magnification ratio is 0.059x (With SEL16F28) and 0.086x (With SEL20F28) What's In The Box: Lens front cap,Lens rear cap,Carrying case Angle of View (APS-C):103(With SEL16F28) / 88(With SEL20F28)