... 30.5,34,40.5mm,43mm,46mm,49mm to 37mm *M37,40.5,43,49,55,58 ... ,62 to 52mm *M52,55 to 58mm *M55,58,62,67 to 72mm *M67,72,77 to 82mm Adapter ... fisheye lens,and so on. Adapter rings are labeled from the camera to the filter. For example, a 25 ... filter (or other adapter ring) to fit. Adapter rings can be stacked. To use a 49mm filter on a ... lens, first use a 25.5mm to 46mm step up ring and then a 46mm ...