^^^What Rog Said^^^ the 'Beercan' on all my film Dynax's and my 7D is superb (if a bit heavy) especially the 'bokeh' when wide open, in fact come to think of it all my Minolta f/4 lenses do display superb lens characteristics from f/4 on:). Personally if I were going for a Macro I'd go for the 100 f/2.8 D which according to the late Dr Stewart Bell of AP lens test fame reckoned it was the best 100mm Macro he'd ever tested.
-------------------- Ron NRIPN
Everyone has a photographic memory, some don't have Film or Digital Memory.
Life is a Learning Opportunity