Have I brought this set because I wanted to start working with filters and thereby make the post at least a little lower. Good is definitely that my Cokin P polarizing filter fits in that system so really Cokin P is compatible. Unfortunately, the polarizing filter sits so tightly in it that you can hardly turn him but has to turn the support system, which can result in small focal lengths (17mm on a 1.6 crop DSLR) means that you can see parts of the holder in the picture, but with each items, press the polarizing filter is he sits relaxed in there (the polarizing filter has a serrated metal ring because plastic is just gescharbt away). Apropo wescharben. The holder has to ensure that the adapter ring can not slip out, a small increase. To slide the bracket on the adapter ring, you have to somehow increase pull up, which leads mostly that I'm tight for my taste to the lens with my fingers, the increase will therefore far down so polish it easier it is to to set. From other Cokin systems I know that the adapter ring also sits as firmly enough. The color filter per se, I could not test, but the colors are easily recognized, although I would have liked to see the colors draufstehen as some filters but are quite similar (red, pink, or tea [Brown] and ND2). The ND8 filter (the universal) appears to me to have a little reddish but since I have been working in RAW does not bother me that. To have tested without the color filter Conclusion, on the whole, a functional set. The fifth star is on the increase and plastic hang Einchub in the polarizing filter.