making automatic to manual aperture. BUT! it works from f2.8 till f5.6!
actually many people with mirrorles cameras and adapters using this old lens for georgeous bokeh and even making it manual till f5.6 made me happy. i guess if photographer had the same lens as i have in this video he/she used it only full opened at f2.8 but now it is possible use it also at f4 and f5.6 and even f22 if take lens press that dang thing at end of lens and put again. i do not take any responsibility in case somebody does the same trick and damages the lens. please be very carefull as springs and bolts are very tiny and tend to jump to Moon.
[ Ссылка ]
