So I have most of the focal range I need now. I have the 11-18mm, 16-50mm and also the 18-270mm, Tamron. I really wish there were more wide options. The 11-18mm could use to be a little sharper in the corners and the Sigma wide lens can not be used with a Cokin filter. But that leaves me needing a macro lens or maybe even tubes. I am not wanting expensive. I would be manually focusing. So what would be a killer macro lens? Or are there tubes avaliable and what lens to use with a tube?:idea: