Lets start from the begging: I was at a thrift store yesterday and I found a Vivitar "Macro Focusing Zoom" Lens 75-205mm. I have a Nikon D40 body. This lens wont fit on my camera. I knew that it was a film lens and the autofocus wouldn't work. But it wont fit. Do I need an adapter or should I just resell it? It was only $25.