Since most of the days were cloudy and the sunsets were not optimal, I had to find other objects to be the subject of my images. I use this technique often with my camera but had only experimented with it once on the drone. The idea is you put a neutral density (ND) filter on the lens, and it darkens the image. It allows the shutter to remain open longer, and it creates a blur in the moving objects. I utilized this to smooth the waves and to add more depth to the seemingly calm city.