I recently got my hands on a f1.7 35mm cctv prime lens. $30 on ebay http://bit.ly/lvFYSO. I couldn’t be happier with the early results. This is truly amazing glass for the money. It’s wicked sharp in the center with soft, almost tilt-shift edges.
The fun part is when my c-mount to micro 4/3 adapter arrived I had to break out my drill to get to seat properly.