captsteve wrote:
I just did what you are trying to do a couple weeks ago.
I used a vivitar NDX filter (variable ND) it will go as dark as you like, but DO not try to use a cpl with it.
The NDX is basically 2cpl's mounted together with a graduated scale. I found mine for less than $30.00 and have had great sucess with it.
Post your photo, like to see it.