You can use this chart to calculate how various strengths of neutral density (ND) filter will impact on your shutter speed. The chart can be used for ND strengths ranging from 1-12 stops. Most polarisers have roughly 2 stops of neutral density, and Lee Big Stoppers have 10-11 stops of neutral density.
- Epic sunrise at Murlough Bay, Northern Ireland
- The Twelve Pines, Ireland