Asked | Open questions | Answered Date Pair Term Level Status Answers (undeclined) Gloss Nov 25 '13 eng>deu The extension tubes have no optics. pro closed 2 no Nov 25 '13 eng>deu Viewfinder pro closed 1 no Nov 25 '13 eng>deu Macro Lens extension tube / ring for Canon Cameras pro closed 2 ok Asked | Open questions | Answered