Hey... As the title says, I have one Tamron 70-300mm f/4.5-5.6 lens for Pentax K-mount. Owned for one year, condition is basically as new. I've been very happy with it, only reason for selling is to help raise money for a faster lens. As a budget tele zoom it's really quite good. In my opinion better than the equivalent Sigma. This one being for Pentax K mount, it will work on any Pentax film or digital SLR, a Samsung dSLR, or any of the various other film SLRs which have used the K mount over the years (by Vivitar, Cosina, Ricoh etc). I'm in South-East England, am happy to meet in London or surrounding counties, or post elsewhere in the world using the service of your choice. Price is very much negotiable so please feel free to make an offer. There must be some Pentaxians out there looking for something in this range... if so, please let me know; I can sell you the lens for a good price and you can save me from having to list it on Ebay Photos of the lens, and sample shots, can be posted here or emailed on request.