As others have said lee Hitech then cokin in that order. The othert thing to take into consideration is a CPL, this needs to be the filter the light enters so with the lee filters ( and the hiech to from what I understand) you will need a 105mm filter and adaptor ring, I got the B&w kassman CPL and these cost about £300 ontop of the Nd grads and filter holder.
You can use normal screw in CPL with a bit of patience. I've done it, it just takes time to get everything angle right.
Lee resin aren't the best either. I am now wanting something glass and multicoated to fight flare and ghosts.
I have read that the CPL should be the first filter due to the way the light acts if it has been through the other filters first.
Let's face it nothing is the best unless its made by canon![]()
hi dave
have you got any references to this. would be really intereested to read.
Cheers,
S