An absolute buy recommendation for this collection. I was really keen only on the gray filter ... Unfortunately, I have to set then must bequeath to my son. By cursory reading the comments I had assumed that compatibility exists for Cokin Z-Pro system. However, the filters are about 1-2 cm or less (not 100 mm). This I get on a full frame camera from about 28mm focal length at the corners vignetting. But my son has an APS-C camera. There, the problem up to 17mm focal length is not on. he was naturally excited ^^ I'm now the Cokin Z-Pro Grauverlauffilter Kit concerned - without vignetting. Class quality ... but of course, considerably more expensive.
