Indeed the 350D is puny, not only that, the shutter sounds very high pitch which makes me feel really uneasy about. It feels like a prosumer DC more than a typical DSLR. Still, I prefer the size of my 300D.
Shot 1 and 2: Lack of subject interest
Shot 3: Best of the 4...but would be better if the DOF is on the entire of the cameleon and not only on the head + the branches
Shot 4: Lack of subjet interest
btw, is it the sigma 75-300 lens?