I really like the colors and the lighting you have done. It is very subtle and really soft to the eyes. Its easier to get sharper colors but getting subtle colors that are so well blended is really difficult. I love the expressions in the left side picture.
In the right hands a Contax 645 with an 80mm wide open can produce gorgeous images. Looking at these photos.....it's definitely in the right hands. Congratulations on the fine work.