Sigma PanTel 135mm f2.8 - f64 , not a typing error , at f64 with good light , just about everything in shot will be in focus , an amazing lens  . M42mm screw mount . Built in lens hood . Caps supplied . In full working order . Auto aperture . The optics are free from fungus and scratches but there is some hazy residue staining under the front two elements and then just the usual odd tiny dust specks . Free UK P&P .