Thank you so much for your advice. If I can find it again I will try it.
Nikonian72 wrote:
This full-sun waterfall lends itself to the use of a polarizing filter, or a ND filter, to allow slower shutter speeds. An HDR would then make waterfall appear more robust, and the water more silky.
If you have the opportunity to re-visit waterfall, try ISO 100, f/22, and bracket slower shutter speeds. With a situation like this, you can play around with aperture/shutter speed combos until you find the set you like best.