The Sigma 16mm f/1.4 DC DN Contemporary Lens for Canon EF-M Mount is a prime lens designed for Canon cameras with an EF-M mount. With a fast maximum aperture of f/1.4, this lens is ideal for capturing sharp images in low light conditions. Made of plastic and manufactured in Japan, this Sigma lens is part of the Canon EF-M series, known for its high-quality optics and reliable performance. Its fixed focal length of 16mm makes it perfect for landscape photography and architectural shots, with a compatible front lens filter size of 67mm. Used but still looks mint. please see photos. not been used for a long time.