NiSi Square Nano IRGND Reverse 150x170mm GND4 0.6

NiSi Square Nano IRGND Reverse 150x170mm GND4 0.6

The NiSi Nano Reverse Graded IR ND filter is a semi-opaque filter designed for landscape photographers, made of high quality nano-coated optical glass. The filter's dimming is at its maximum in the central part of the filter, fading steeply towards the bottom of the image and gradually towards the top of the image. The filter works best for sunsets and sunrises, does not affect colour rendition and can be used with other filters.

NiSi gray filters are designed for digital cells and reduce both visible light and infrared frequencies evenly. The NiSi Optical Nano coating used on all filter surfaces allows very uniform filtering without colour aberrations.

Main features

• Made from high quality optical glass (H-K9L) for a bright image and good colour rendition
• Very few colour defects or reflections
• Does not bias, can be used in combination with other filters
• IRND coating ensures uniform filtering at different frequencies
• Nano treatment on both sides protects against scratches and dirt
• Easy to clean
• Protective coating: nano
• Filter size (mm): 150×170
• Filter type: IRGND
• Gray filter type: reverse
• ND factor: ND4 / 2 apertures (0.6)