The lens is constructed of nine elements in seven groups with one aspherical and one double-sided aspherical element. In case you're wondering, the double-sided aspherical element has an aspheric shape on both sides of the element. The lens has threads for 52mm filters, can focus as close as 11.8 inches and has a maximum magnification of 1:7. The minimum aperture is f/16 and the lens uses nine rounded aperture blades, generating some really nice, and rather smooth, bokeh. Another plus is the lens's small size (2.6x2.9 inches) and light weight (9.3 ounces). It was well balanced and comfortable to carry around for hours on end when mounted on the A6300.