The Nuances Extreme Reverse Grade ND16 allows up to 4 stops of light compensation with a soft transition from the filter center where it is most dense and fades upwards, the back of a normal gradient filter. All Nuances Extreme filters are made from a new type of tempered optical glass that is four times stronger than the previous series. This means that your new filters can take with you in extreme conditions and withstand those inevitable drops, nicks and scratches that can impact any photographer. A new coating process ensures even density. This process results in stunning neutrality and absolute color consistency in all types and densities in the series. Switching from one density or format to another still gives the same colour results, no adjustments required. These filters feature a 2mm thick glass and rounded corners to easily insert them into a filter holder. If a light-proof seal is needed, Cokin recommends using the rear slot of the EVO series filter holders. Reverse Grad Filters Reverse Grad are the perfect filter for shooting sunrises and sunsets where the sun is above the horizon in full view. By adjusting the darkest part of the filter in the middle of the filter and letting it fade into the sky, you create a natural gradation look and better exposure control in the areas that need it most. This is a hardstop classified on the horizon, up to