I put a few clips together, including some when it was quite dark. The 70U is a lot easier to use than the EX1R for this kind of video because of its great image stabilization. I used Premiere 5.5, which I am still trying to learn, because (unlike with FCP), I can import the files without converting them first. I do wish the camera had a build in ND filter. A wider selection of WB presets would be nice too.

Windermere on Vimeo

Did you use your own external NC filter of the bright daylight images? I don't see much of the choppy artifact caused by using higher shutter speeds.

I used the ND filter Sony sells as an accessory for the camera,

Sony VF-37NKB Filter Kit VF37NKB B&H Photo Video