Hi,
I bought a couple c mount lenses a while back and really haven't had a chance to try them out until now. One is a pentax 6mm 1.2 and I cannot seem to get it to focus. I had to unscrew the tiny screws on the side to allow movement of the focus and aperture rings to use them. Similar to this: http://www.avsupply.com/Pentax-Cosmicar/c22525kp-b2514d-kp.php
The other is a computar tv lens 25mm 1.3 and the blades are not open as there are wires off to the side which makes me think I purchased the wrong lens. Perhaps there's something I can do to open it up.
Any and all advice is appreciated.