I bought this from the Revain e-cart. It arrived in a white box instead of the original Panasonic lens packaging. There was no cover on the back of the lens, no instruction manual, no warranty/registration card. These questions seemed very strange. The main reason I returned it was that the seven-leaf diaphragm was oval/trapezoidal rather than round. What I also don't like is that there is no guarantee on the lens.
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