У вашего броузера проблема в совместимости с HTML5
This is the condensed video of my completely disassembling a 50mm lens to clean the oil off of the aperture blades. In real time it took about 2 hours of trial and error (mostly error). Hopefully this will encourage any one with a similar lens to fix their own, as long as you don't loose any parts anything that can be taken apart can be put back together.