I need some insight on using my stock of auto focus Nikon lenses on a Nikon D200 body. I am aware that the focal length of these lenses will change due to the sensor size being differnet that the 35mm film size. My concern is performance. Can expect the same image quality with a lens that is not specifically designed for a digital sensor? The bulk of my ptotography has been on 35mm transperency film. Can I expect to match those results with my existing lenses mounted on a D200 body. I am especially concerned with enlargements in the 8" x 10" to 16" x 20" range. Any insight will be appreciated.