3. Turn your ISO to the lowest setting
When you’re shooting waterfalls during the day and using a slow shutter speed, your images can easily become overexposed. To prevent that from happening, adjust your camera’s ISO so that it’s at its lowest setting. Then, switch your lens to a small aperture between f/11 and f/16.
4. Make the most of an ND filter
If you do a test shot and your shutter speed still isn’t slow enough, it’s time to call on a Neutral Density (ND) filter. These filters come in varying degrees, and their main purpose is to reduce the amount of light that enters the lens. To give you an idea of their strength, a 2x ND filter will let in 50% less light (equal to 1-stop), while a 4 x ND filter will let in 25% less light (2-stops), and so on. The best filter for your waterfall photo shoot depends on how bright your surroundings are.
By manipulating the amount of light that comes in, ND filters require you to slow down the shutter speed on your digital camera to get a good exposure — and this is the secret to snapping beautiful waterfall photos!
ND filters also smooth and blur any movement, and enhance the texture and tonal contrast of your photo. When you use one, you can expect to end up with crisp, vibrantly coloured shots that aren’t washed out.