Correct. I have one of the tiffen's for the cokin p. I stated that they don't fit 4x4 holders. The smaller sizes aren't made for the movie industry, and none of them I've seen were multicoated. The 2 stop (glass) tiffen grad I had left a color cast. Tiffen filters are OK, not the quality b+w/ schneider provides. Hitech DOES have a new modular holder which just came out that will hold 4mm thick glass filters though I have not tried it.
Last edited by wildbill; 08-08-2012 at 10:16 AM. Click to view previous post history.