This Christmas my hubby is buying me a Canon 5D Mark II. I'm so excited and can't wait to get my hands on it. I've borrowed other cameras in the past, but they were Nikon's so I'm not too sure what kind of lenses I should be looking into purchasing. Right now the only lens I have at my disposal will be the lens it comes with - a 50mm f/1.8. My goal is to photograph WEDDINGS, FAMILIES, INDIVIDUALS and NEWBORNS. I've heard the 24-105 f/4 IS is a great lens ... could this lens be useful for all areas I'm interested in shooting??? So ... what lens could you not live without and why!!!