The marumi 55mm dhg achromat macro lens 330 3 gives a magnification factor or 3 and transforms a standard lens into a macro it will also enhance the performance and capability when used in conjunction with a macro lens this macro lens is designed to work on lenses with a 55mm filter size and simply attaches to the front of your lens the achromat lenses are available for all digital slr camera lenses and are ideal for close up photography jewellery nature small electronics etc each le