Great to share this practical experience. Very good. Think this is decision for regular one, as I am a hobby user. What is this Gel filter and where can i get it?
Oops.. was meant to have posted this link in my previous post..
Please see first page of this thread for the Gel filter..
and Post #81 on Page 5 for the ring that allows you to inset the polariser gel filter infront of the ND filter..
Professionally die cut nd filters only $2 each!!!