NiSi 4x5.65 Nano Hard IRND1.2 Grad HE

The NiSi Nano Hard Edge Infrared IRND filter darkens specific areas of an image, such as bright skies, while allowing normal and unaffected exposure to other areas of the image. The filter is denser at the edge and shrinks to disengage from the middle, with a sharply sharp transition line between dense and light areas. Neutral density filters do not affect the color of the image. This filter is usually used when the separation between the luminous and dark areas of the scene is very defined, such as the line of the horizon or the boundary between sea level and sky.

The design of this filter has been optimized for use with digital sensors and to favor almost flat attenuation of visible and infrared light. To provide a high level of neutrality on visible and infrared spectra to eliminate color casting and ensure cleaner, cleaner blacks when using the NiDi Hard-Edge Graduated IRND filter, a layer of NiSi Optical Nano Coating is applied to each of these surfaces of the filter.

This NiSi Nano Hard-Edge graduated filter is constructed from optical glass for clarity and color fidelity. 
The graduated neutral density filter darkens the luminous areas of an image like the skies while leaving the rest Of the unaffected frame 
Transition line between dense and light areas 
The filter does not affect the color of the image and is ideal for use with other filters 
Each surface includes a layer of NiSi Optical Nano Coating that attenuates Infrared light as well as visible wavelengths, in order to maintain color neutrality and suppress colors due to time -Increased exposure 
Constructed from optical glass for clarity 
Scratch resistance
This filter measures 4 mm thickness