Guys, I am going to a friends wedding on Friday and I was wondering if anyone could provide me with a few tips!! Heres the scenario!! I am not the main photographer, this is purely for my records!! I have a 20D with a Sigma 28-135mm Macro Aspherical lens!! Can anyone please suggest the best Mode and associated settings if it is: a) a dull day with mainly clouds in the sky! b) a sunny day! I look forward to your comments! PS. I have enough memory to shoot RAW!!