Already listed the componon-S but figured I'd throw it in here with this specific list. Schneider Componon-S 150mm, sharp sharp lens. Comes on a turret for D5XL (possibly other Omega models) and a free Componon 50mm (older version): $95 El-Nikkor 50mm f/2.8 - $50 El-Nikkor 80mm f/4 - $50 Glass on all are in basically perfect condition. Nikkors do not include the turret. I think the componon is supposed to have an aperture mechanism that lets you jump between preset and wide-open aperture by moving a lever. This one does not do that; the little toggle (a small switch on the side) does nothing. I was never bothered by it, I just stopped it down with the click stops or by looking at it under the safelight (or white light) as appropriate.