Fast F2.8 APS-C lens with standard zoom Sony first 16-55mm APS-C lens (24-82.5mm equivalent for Full-Frame zoom) with a constant aperture of F2.8 is remarkably compact, delivering the performance of the G-Series lenses. New the optical design provides excellent resolution up to the edges and creates a wonderful bokeh effect when needed. Bayonet E, APS-C format Compact G-series F2.8 APS-C lens with standard zoom High resolution throughout the zoom range, even at F2.8 Bayonet: Sony E-bayonet Format: APS-C Focal length (mm): 16 to 55 35mm focal length equivalent (APS-C): 24 to 82.5 Lens groups/members: 12 “17 Viewing angle (APS-C): 83° to 29° Luminosity (F): 2.8 Luminosity (F): 22 Aperture blades: 9 Circular aperture: Yes Minimum focusing distance: 0.33 m (1.09 feet) Maximum magnification ratio (x): 0.2 Filter diameter (mm): 67 Image stabilization (SteadyShot): - (integrated in the body) Zoom system: Manual Sun visor type: Plate, bayonet type Dimensions (W x H x D): 73 x 100 mm (2 7/8 x 4 inches) Weight: 494 g (17.5 oz.)