This 300mm Tele-Takumar long lens by The Asahi Optical Co is precisely built so as to have super smooth. non creeping focus and postive detents on the aperture ring. Has tripod collar fitted and comes with both lens caps and metal screw on lens hood. This lens has seen very little use and could be decxribed as new. M42 screw mount for your Pentax Spotmatic etc or get the optional M42 - Nex adapter to use with your full frame Sony.