I am selling a Tamron SP 28-135mm Adaptall lens along with a Tamron SP Adaptall 2x teleconverter. I am including one Pentax P/K adapter so that they can be mounted on a Pentax camera. Both are the older, well-built metal versions...max. aperture on the zoom is 4-4.5. The glass on both ends of the zoom lens is extremely clean and does not show any signs of scratches, rub marks, or even dust. The lens barrel is also very clean with no signs of brassing or scratches. For some reason I am unable to get the lens to extend all the way through its zoom range...the focus turns smoothly, the aperture works correctly, but I can't get it to zoom much past 35mm. I've never really used an adaptall before, so I am not sure if I understand its movements, as they are a bit more complicated than a standard push/pull zoom. The 2x teleconverter shows a little bit of haze in the rear element, but the barrel is extremely clean. I am including the Pentax P/K adapter with the package. The teleconverter comes with front and rear caps, while the zoom has rear cap only. Please email me with any questions. Price for both items plus the adapter is $35 plus shipping. Shipping is $12 CONUS. Thanks!