Picking up an entry DSLR soon(D50, 70). One of the D50's I am looking at has a choice of lenses, Sigma 70-300 F4-5.6 DL Sigma 70-300 F4-5.6 DG Sigma 28-90 D F3.5-5.6 Nikkor 70-210 F4-5.6 Sigma 28-105 F2.8-4 D In talking to a friend of mine, he says that there is a major difference in the 18 vs 28. He claims that I won't be able to get "good" close up shots of my daughter. 99% of my shots are going to be the family, pets and the occasional neice/nephew playing soccer/volleyball/hockey. 75% of that will probably be indoors with a focus being on the baby growing up. So, my question is do I get one of the longer 70-300 lenses and pick up an 18-70 on ebay, or is there that much difference in the 18 vs 28? Or, do I just stick with the 28-105 and it should do what I need, until I figure out what I really need. Thanks for your help.