adaptall 2 lens mount many available here on this site, this is a fantastic portrait lens or use as a compact tele zoom that can fit in your pocket and has built in lens hood, very clean condition but does have the useual few specks of dust and a larger spot of something but its next to the edge so

wont be in the optical path when stopped down to take the picture zoom and focus is smooth and nicely weighted apeture is fast and snappy good working order, comes with a free vivitar 28-70 zoom lens that works ok but if you focus down to 4.5 feet the front will come off in your hand so if you only take it down to five feet its works fine it is pentax pkm mount the tamron does not come with a mount