This is a very unique telephoto zoom lens that is very compact for it's focal length zoom range. I purchased this lens new and have kept it in like new condition. It's a reflex or mirror lens that has a real advantage as a very compact lens compared to standard telephotos. The lens comes with 7 rear mount filters and accepts 67mm front filters. I also have the original Pentax hard case, hood, lens caps and box. The lens does have a very shallow depth of field, which can be a real advantage for having the main subject in focus with the background blurred out of focus. Really makes the subject stand out. Due to the 1.5x focal conversion for Pentax digital SLRs, this lens has an amazing focal length range of 600-900mm! Now that's some serious ultra telephoto zoom range. Phone: 406 543-2323 Ask for Jerry Location: Missoula it's NOT ok to contact this poster with services or other commercial interests montana