NiSi Square Nano IRGND Medium 150x170mm ND4 0.6

NiSi Square Nano IRGND Medium 150x170mm ND4 0.6

The NiSi Nano IR Medium Graduated Neutral Density filter is a semi-opaque filter designed for landscape photographers, made from high quality nano-coated optical glass. The semi-opaque filter allows the desired side of the image, such as a clear sky, to be darkened without altering the exposure of the rest of the image. The darkening of the filter is greatest at the edge and decreases moderately towards the centre of the filter. The grey filter does not affect colour rendition and other filters can be used with it.

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
• Type of grit filter: medium
• ND factor: ND4 / 2 apertures (0.6)