Photography Challenge #1: Photo 1 - 35mm Prime Lens Portrait, Natural Light

First off is a portrait using my 35mm prime, shot with natural light only (no flash). I stopped down to f/5.6 so I could compare it to a portrait shot with my zoom lens (see next challenge post).

I like how the shadow hints at the complexity of the mechanics that isn't evident in the actual object because of the way it is positioned.

I really should have cleaned the Sterling Engine before the photo session.