Fotga 46mm Ultra Slim CPL Circular Polarizing Glass Filter for Canon Nikon Sony Pentax Olympus Panasonic Fujifilm Leica Ricoh Samsung Dslr Cameras Lenses Black almite frame:filters feature a black matte. Black rimmed glass:these filters equipped with black rimmed glass to reduce the chance of the light off the edge Low profile frame:ultra thin filter frames to help avoid vignetting on super wide angle lenses are also designed to hold a lens cap Knurling edge frame:these filters are equipped with a straight knurling edge for non-slip.Easy attachment and removal. Ultra thin 1mm glass,3mm low profile frame,glass from Japan