high-performance optical glass, with high transmittance and advanced coating technology, it make your images wider and clearer, and make your pictures colorful. The metal outer layer , hard, wear-resistant, pollution resistant and Full autofocus (AF) compatible, full IR-compatible, for high resolution day & night This 0.35X professional conversion lens has high-definition optical resolution. If you install this lens on your camera, it will immediately multiply your zooming, provide you with wider view, and achieve amazing wide-angle photography. Two in design 0.35X wide-angle fisheye lens with macro part, cameras and cameras with 52mm size lens filter thread.