Thanks. It's true, multiple-exposure HDR of moving water is a complete waste of time. I have tried it before on several occasions and got nothing but frustration for my efforts. I use Photomatix most of the time for HDR processing. It is an app that gets regular updates, and I'm not convinced that all of them have been improvements. That said, the support of pseudo-HDR-from-RAW has gotten much better over the years. Also, Photomatix now finally passes EXIF data through to the final image. It didn't for years, and when it first did, it chewed on it something fiece (F/7.9999 instead of F/8, WTF?) but now it works quite well. Best $100 I ever spent on software, TBH.