Hi Im looking for some advice if anybody can help. I've just taken up photography and would like to concentrate my time on macro. My kit consists of a Canon Eos 400d camera with kit lens and EF 50mm f/1.8 II and Canon EF-S 17-85mm f-4.0-5.6 USM IS AF Zoom Lens. Im thinking of purchasing one of the following lenses Canon EF-S 60mm f/2.8 Macro USM Lens Canon EF 100mm f/2.8 Macro USM Lens My question which one of the above lenses would be more beneficial. Any advice would be kindly appreciated.