[QUOTE=Magijr;74250]
Quote Originally Posted by Jon Ruyle View Post
I used to use the 70-200 f/4 (non IS) and a rebel to take pictures of my son when he was a baby and daughter when she was small. I later upgraded to the 70-200 f/2.8 IS, and later the 70-200 f/2.8 IS II (by then my kids were bigger )

The 70-200 f/4 was fine for outdoors, but required a little too much light to use indoors. I used the 70-200 f/2.8 IS both indoors and outdoors, and never felt like it was too long, even indoors on the rebel. I guess I prefer a little more working distance than Scott.

It seems that you are very familiar with the zoom lens, the 70-200 in particular. I think I may rent one and try it out, they are certainly very expensive, but everything I read about the 70-200 f/2.8 IS II is very positive. In fact, the 70-200 f/2.8 IS II is the-digital-picture.com creator's favorite lens, and it's ranked # 1 on Amazon... makes a good case. My 2 concerns with the 70-200 f/2.8 IS II is the shear size when paired up with the rebel 4ti, not sure if the body will hold up that well and can I use it in the nursery, or other smaller rooms?
Please don't get me wrong. I highly reccomend the 70-200 2.8 II, and I highly reccomend you buy one. I love mine. As soon as the baby is wallking around the lens will be priceless.
I just don't see any way you could ever make 70-200 your only lens. You can use it indoors sometimes, yes, but it is just too long for much of what you would want to shoot. You would have to have a wider "walking around lens" like the 17-55 or an 18-55 or something like that.