Long exposure is the key to waterfalls. And when you are rewarded with a weather like this, then that's it. I took this photo in Dalat, Vietnam. This is Pongour Waterfall. Mostly, we don't like to visit those tourist packed waterfalls, but sometimes we give it a go. Here was quite nice that day, with not much crowd and cool weather. I used Sony a6500 and 12mm Samyang lens with neutral density filter.