While the prequels had a lot of flack blasted at them, almost all of it unjustly, there was always one element which just stunk of unfairness and that was the allegation that the films had too much CGI in lieu of traditional model work.
Check out this video, expertly compiled and explained by EC Henry and prepare to be blown away by just how much model work was created and crafted by the geniuses at ILM for sequel trilogy.