Soligor 105mm 2.8 M42, little portrait lens

See below for some images made with my EOS 5D

Just did some quick testing @ f2.8 It has decent sharpness and contrast already, good colour saturation and a nice background and foreground bokeh. Very nice this 40-year old tiny portrait lens. Eight blade circulair aperture (which remains circulair until f4.5), 46mm filter tread, choice between half stop click or stepless aperture ring, evenly smooth focus and minimum focus of 1.2m