LEE Filters maintains its premium reputation with a hand-dyed optical resin GND system. Unlike the glass used in their famous ...
Reynard Corporation offeres customization of their Circular Variable Neutral Density (CVND) Filters. This technology is best used in high quality optical systems to change the intensity of light from ...
Marumi is also known for its quick magnetic filter system, and the range of graduated ND filters I got hold of for testing all belong to this magnetic system that works with the Marumi M100 filter ...