This lens is currently the widest zoom lens available for Sony full frame E-mount cameras. Designed primarily for travel photography, Venus optics have managed to compress the size to smallest in its class, less than 4 inches (9.1 cm) and only 1.1 pounds (496g). The 102° (18mm) to 130° (10mm) angle of view provides flexibility for photographers to compose landscape or architecture photos with ease. The lens houses 14 elements in 10 groups with two aspherical elements and one extra-low dispersion element to deliver exceptional performance. It can focus as close as 15cm for some mini-macro shooting. A rear filter slot is included to fit with 37mm filter. Click/clickless aperture can be toggled by a switch on the lens barrel.