No box, damaged, but does not affect the use . electronic lens mount adapter CM-EF-NEX is mainly used for connecting the ‘Canon EF series lens’ to ‘Sony NEX series cameras with E-mount’. Meanwhile, utilizes the new electronic technology, which can make the aperture exactly being aligned via the adapter, and adjusted for auto-focus. It enhances the convenience of controlling the Canon EF series lens on Sony micro-single camera bodies in the electronic way. Besides, the aperture hole of the adapter design is based on the full-frame NEX camera, which help perfectly support the Sony NEX full-frame camera A7 and A7R. Comparing with the normal manual adapter, it brings you more exact Aperture adjustment guide and using convenience. Making your image much more flexible and professional.