METABONES NIKON G SpeedBooster URTRA for SONY NEX E Unused No manual Brand: Metabones Lens Type: Wide Angle Compatible Mount: Sony E Actual Angle of View: 50.7 degrees Maximum Aperture: f/2 GTIN (Global Trade Identification Number): 04897050181362 Using this adapter makes the lens one stop brighter. The lens's angle of view becomes wider by a factor of 0.71. Aperture control is possible. The tripod screw mount is removable and compatible with Arca Swiss, Markins, and Photo Cam ball heads. 03