Tamron Industries 13VM20100AS 1/3- ASPHERICAL VARI FOCAL LEN S 20-100MM F/1.6 MAN IRIS Tamron Industries 13VM20100AS 1/3- ASPHERICAL VARI FOCAL LEN S 20-100MM F/1.6 MAN IRIS Also known as -TAMRON USA 20-100MM F/1.6 1/3" ASPHERICAL VARI- (13VM20100AS)