I have a Nikon D80 and my husband had an older Nikon camera with about 4 other lenses for it. I took them all to my local camera shop and the guy told me that I could use all of them on my camera. They are all manual focus. I put them on my camera and set my camera to manual focus and I can not get a picture out of them to save my life. Can someone tell me what I need to do? Thank!