Just bought a Canon A710IS. I'm a long ways from a pro photographer so it looked like it was right up my alley. Point, shoot and I have pics. Question is this: There area a couple of different lenses Canon shows for this on their site but I'm not clear on if they will offer increased zoom or just take a wider field of view or what. Here is the link to the lenses I'm talking about: http://www.usa.canon.com/consumer/controller?act=SNAModelSuppliesAct&fcategoryid=811&modelid=14117 TIA for the help.