[Gaz2374]

Hi guys I'm thinking of a dedicated lens my options are canon 100mm usm f2.8 or sigma ex dg 50mm f2.8 macro I no the canon will give me a better distance to work with and is a better lens so this might be the one but i also have a canon 50mm f1.8/tubes and upto 17x of diopters .
So question is will I get better results with the sigma over my current nifty fifty as I wouldn't want to scrimp and get the sigma for nothing better than what I can get already. And would rather save and get the 100mm canon instead if this is the case .

Thanks gaz