Pixtic - Set of 3 macro extension rings for Canon EOS 500D, 600D, 1000D, 1100D, 50D, 60D etc. (Electronic devices)
The downside of extension tubes is that the focus is manual, quon loses all connections between the goal and the housing and that the more they are, the more light is lost, but it's a known thing not néchappe this product, so I nenlève not detoile he