Hard Edge ND grads feature a neutral gray effect at the top of the filter that sharply transitions to clear at the center of the filter. The main function of a graduated ND is to balance the luminosity of the sky to the terrain below. The hard edge grad primarily used in photos that feature a defined and uninterrupted horizon, such as a seascape. Formatt-Hitech filters are made from the highest quality 4mm Schott Superwite glass
Graduated filters have an effect that occurs on one area of the filter and transitions to clear on other areas of the filter. Typically graduated filters are used to enhance the sky or terrain, or balance the luminosity of the sky to the luminosity of the terrain. For hard and soft grad filters, colors are often deployed (such as sunset or twilight) to enhance the color of the sky.
Formatt-Hitech offers four varieties of Graduated Neutral Density Filters:
Soft Edge Grad
Hard Edge Grad
Hard Edge Grads feature a defined transition between the clear and the ND. These filters are ideal for reducing luminance of the bright sky over a defined horizon line, such as a seascape.
Roughly speaking soft edge grad filters are for wide angle lenses and hard edge filters are for longer lenses. This gives the most visually attractive effect transition at the horizon line. With the transition placed carefully on the horizon, the hard edge grad is one of the most effect tools available for balancing a bright sky to a dark terrain and is an essential tool for both fine art photographers and professional cinematographers alike.
1 - 4 Stops
4mm Filter Sizes
4x4" | 4x5.65" | 5x5" | 5.65x5.65" | 6.6x6.6mm