Cleaning oil on the aperture of Minolta 58mm 1.4 PF
These two videos show how to disassemble and repair a Minolta 58mm f/1.4 PF MC lens and then reassemble. Some people are converting this beautifully built lens to digital by removing the mount and making modifications as well as adding a M42 Adapter ring. The demonstration is broken down into two videos you can see here and here.