Far easier to purchase a new one that fits the camera correctly, there were many number of Universal mount lenses made, but not all of them worked the same, various companies changed small things to suit their brands,

This website contains a wealth of information about various lens mounts, how they were developed and what can be done to what types of lenses, in additon to some information on homebrew stuff.


In additon, they have registration distances and just about anything else you can think of!