The Elite Shield has been specifically designed to block all unwanted light seepage when using the Neutral Density Glass Pro Filters with the Elite Filter Holder.
Using the square (84x84mm) Neutral Density Glass Pro Filters with the Elite Filter Holder results in unwanted light seeping into the camera lens and affecting the resulting image. By attaching the Elite Shield this corrects the unwanted light issue.
Simply screw the Elite Shield into the centre thread of the Elite Filter Holder before sliding the Neutral Density Glass Pro Filters in to the filter slots.
important
The Elite Shield is only effective for when using the Neutral Density Glass Pro Filters. Rectangle filters (84x100mm) are not affected by any unwanted light seepage. The same result can be achieved by using the Neutral Density Glass Pro Filters with an Elite Filter.