I have been asked to take some outdoor portrait photos. The shots will be taken at around 2:00 PM (I know that is not ideal, but I don't have control). I have a D80 and a Nikon 70-200 f2.8 VR lens. I was wondering what aperture and at what focal length would you shoot these pictures to get the best possible images. It is supposed to be a bright sunny day. I realize that there might be other factors that enter into the decision. Any thoughts would be appreciated.