BTW... If you already have a high quality circular polarizer, you can pick up a high quality linear polarizer really cheap (because no one wants one in this digital age), and stack them to make a variable ND filter.
I will have to check into that. I did purchase the one you listed in your post.
You mentioned you like ISO 400. Is that still at 400?
Yes I do like ISO 400 but following Peter’s and Scott’s instruction I was to use 100.
Shutter Mode 1/60, ISO 100. The camera grabbed F20 for aperture.