Actually, vintage stills lenses work great for video–many of them are great quality, they’re available for low prices, and they can be modded so that the aperture changes smoothly. The focus breathing isn’t always well controlled, but neither is that true on a $2000 Canon L-series lens, so…
Anyway, don’t knock ’em until you’ve tried ’em. They can be a great solution. There are even Hollywood DPs that use them, in certain projects.
Peter, the M/MD just means Minolta MD mount. Any MD-m43 mount adapter should do the trick, and if you can get one with a Speedbooster optic included, so much the better.