Yes, it should be 3011, a wide-angle to the IP camera INSTAR IN. With this thought, I bought the 2.2mm lens. Because of the reviews I was very skeptical, however. Now get to work with pliers, hot water and other stone age tools. After about 2 hours "vosichtigem" Gefummele I then had operated out of the focus ring is actually the normal lens. Although the lens has fallen apart - but also the problem I could after some time "Hinfummeln" and these assemble. Now, the wide-angle screw - without focus ring is understood - because this makes absolutely no sense, since the wide-angle lens to be screwed so deep that the focus ring unscrewing again. Then the result: disappointing! In daylight reasonably ok - but without lighting objects and people were only dimly discernible.
Rest of the procedure I have a wide-angle back swapped for the supplied standard lens and I am completely satisfied now. More is not at this price. No wide-angle but for a reasonably good image during the day and at night with useful results.
Conclusion The exchange procedure reminded me very much of the stone-age operations. The most important thing but the result was more than disappointing. I advise the purchase of wide-angle lens from 2.2mm!
