I'm a bit late (I don't get over here often enough) but would like to congratulate you on a very nice job on the Cokin filter system. I've used Cokin filters since they became available and were "cheap" - LOL.
Another nice thing is that some of the very unique Singh Ray filters such as the graduated reverse neutral density filter for sunup/sundown can be easily use with the "P" mount as well.
Thanks for the reminder of how nice these filters can be...
I wrote a piece of Cokin's filter system. It's probably not too interesting for expert b&w photographers, as it's kind of a journal of my journey to square filter systems. I wrote it as a hybrid review/guide to Cokin's filters.
As a little something extra, I'm also going to give my input of the necessity (or lack thereof) of color filters with today's digital manipulation.
Read on at http://henrik.paul.fi/articles.php?a=15
Comments are welcome