This is a Carl Zeiss Sonnar f4 150mm portrait lens for a Rollei SL66 medium format camera. It comes with a Zeiss front lens cap and a Rollei rear cap. It's in the original box. The lens is in excellent condition with very minor marks on the body from normal usage. The glass looks good with some minor dust internally. I have more SL66 items listed and will have more to list soon. All of it was from my father's collection.