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Lens won't focus?

Henry Gentles

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I bought a Cosmicar 25mm 1.8 C mount lens. I'm pretty sure it has a focus problem. The aperture works fine but the lens does not move and does not focus. ie There is no movement in the focal length when I wind in or out. Can I fix this? I am an Audio Engineer and Electronic Tech so I have the tools etc to pull this apart and have a nosy!! Can anyone direct me to a link or tutorial as I've never pulled a Lens apart before? (And if I can't fix it, I can fix it so that no one can!!)  ;)

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