Actually, one would think that there is nothing to review a simple threaded ring. But perhaps not everyone has to make sense of damage only, as I do. In this case, I thought namely that you can not go wrong with such a simple component nothing and have ordered a whole set of these rings at a very reasonable price on Amazon at Enjoyyourcamera. A China-replica as it turned out. The 77mm ring, so to speak, has the least thickness in the Cokin P series, but the most commonly used because 77mm is now the de facto standard in most good lenses. At replica ring another -weicheres- metal is apparently used that quickly elastically deforms when unscrewing. Although that is, it returns to its original shape, but can continue to jump a few threads. Consequence: the ring stuck in the filter thread of the lens and is then very difficult to figure out, without damaging the thread of the lens. Since that experience, I use only the original Cokin rings and did not have these problems!
