I used this with a Pentax film SLR camera, but it can also be used on a digital SLR (might require an adapter). Auto or manual focus. Lens is in excellent condition. Comes with a Tiffen UV filter (the lens has had a filter on it since new, which means the lens has been protected from scratches). I also have the lens cap.
This model is currently selling in camera store (Kerrisdale Cameras, used section) for $150.
I'm selling a bunch of other Pentax equipment as well (film SLR body, another lens, battery grip and a Lowepro camera bag). See my seller's list.