I very recently purchased a Rebel Ti kit and immediately started seeing posts claiming that the lens (28-90mm) was "mediocre" and "sub par." Why is that? What makes a good lens good? Or great? What will I see in my pictures? Will a good lens make me a great photographer? (Sorry - just had to throw that in for a chuckle.) I'm sure that one of my next purchases will be another lens. I have thoughts that I would like a zoom in the 100-200mm range. I'm never close to anything, it seems, and I like the framing (fill the picture with what I want) control of a zoom. I believe that most of my shots will be of my animals and local wildlife, with the occasional bug, flower, or distant mountain thrown in. Yeah, I know I'll really need 3 lenses by the time I'm done. Can I get something decent for $200? Something good for $300? Thanks for any tips, suggestions, or pointers.