Hi Gareth.
I was asking if and how much we can move vertically a grad filter on an EX, especially on an EX (there's a problem with the built in mic/lcd interferring with the EX lens end....where a mattebox has to be).

Anybody who actually seen a real camera + (Vocas, Cavision, TLS, etc..) mattebox can say something about REAL usability of grad filters?

The Cavision grads were noticeable on the JVC HD101E (ie the particles weren't fine enough for HD) so with the extra resolution of the EX I think they would be unsuitable. I think the Formatt filters they sell are better quality, but more expensive. The Cavision mattebox is OK, but from all reports the Chroziel is more solid.