Sigma Lens Af30mm /F2.8 Ex Dn (A) Se-Mount F/Sony

2 ultra-low-dispersion (UD) glass elements and rear focusing system

Ultra-sonic monitor (USM) for quick, highly accurate autofocusing

4.9-foot close focusing distance; produces natural-looking background blur

Angle of View 39.6 degrees(Sony E-mount 50.7 degrees)