1985-era Vivitar Series 1 70-210 f/3.5 with macro, manual focus, Nikon mount. I still have it. It still rocks. My son uses it on his Nikon D40 -- no AF, obviously, and also no metering, so it's helping him learn about manual focus and exposure using nothing but the histogram. The sharpness and color are amazing, and at f/3.5, the background blur is really, really nice.