Clean glass, bought it and it doesn't fit my camera.

This Sigma 30mm f/1.4 DC DN HSM ART lens is compatible with Canon EF-M mount and features auto and fixed/prime focus types. With a maximum aperture of f/1.4, it allows for great low-light performance and beautiful bokeh. The lens is made by Sigma, a trusted brand in the photography industry, and is part of the Sigma DC series.

This unit is sold as a single item and comes with a compatible lens front of 52mm. It is a standard, aspherical type lens with a focal length of 30mm. The lens is made in Japan and is of high quality. It