Lens Construction 7 elements in 5 groups. Angle of View 39.6 degrees. (Sony E-mount 50.7 degrees). Number of Diaphragm Blades 7 (Rounded). Mininum Aperture f22. Minimum Focusing Distance 30cm / 11.8in. Filter Size (mm) 46. Maximum Magnifications 1:8.1. Dimensions. (Diameter x Length) 60.8mm x 40.5mm / 2.4in x 1.6in. Weight 140g /4.9oz.