Lens has C-mount. Lens will be shipped without any caps, as pictured. This lens does not have focus ring. It has aperture ring. Not sure how it can be used. Lens does not cover M4/3 frame, it has full circle. To me it seems that it is very wide angle. Maybe 4-8mm. 

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Cosmetic Condition:

Lens has been used. It shows light wear on the lens barrel from use. I would rate it at 6 or good condition on a scale from 1 to 10. Lens has some tape residue on the side. It has some scratches on the metal housing. 

Front and rear glass is free of any noticeable scratches. It has little bit of dust particles inside the glass elements.  No fungus or haze inside. Glass looks very nice over all.