I recently purchased a 25mm f1.4 CCTV C mount Lens. 25mm f1.4 CCTV C mount Lens will fit M4/3 NEX Camera - eBay (item 200539743271 end time Dec-04-10 17:26:05 PST). When I put it on my E-PL1 it does not focus could it be that something is wrong with the lens? When I turn the "near and far" ring the rear part of the lens only moves about 2mm - which it not enough to get anything in focus. I bought an adapter from the eBay seller "rainbowimaging" item #320574706835. Everything fits together as it should but the lens is unseable. Any suggestions?