The lens I now have are a 50MM 1.4 a 17-85MM IS and a 70-200MM F4 L IS plus a 1.4 TC . Now I would like either a Macro or a UWA can't do both at this time. I need to know if Extension tubes such as the Kenko set will help with the Macro using any of what I already have. If so I can swing the UWA and a set of Kenko tubes at this time. If not I will opt for the Macro lens first and wait for the UWA lens.