NiSi Square Nano IRGND Medium 150x170mm ND16 1.2

NiSi Square Nano IRGND Medium 150x170mm – ND16 1.2 Medium Graduated ND for Landscape Photography

The NiSi Square Nano IRGND Medium 150x170mm is a rectangular graduated neutral density filter designed for landscape photographers. It darkens bright areas of a scene, such as skies, while leaving other regions at a normal exposure. As a result, you can keep detail in the sky without affecting foreground exposure.

Designed purpose and common use cases

Use this medium GND filter when your composition includes buildings, mountains, trees, or other elements that protrude into the skyline. Its medium-edged transition helps you manage exposures where a hard or soft edge would be less effective. You can reposition the filter in the holder to recompose the image and place the transition line where it best suits the scene.

Construction and coatings

The filter is made from high quality optical glass, not resin, and is specified as Environmental Optical Lens glass (H-K9L). NiSi applies a nano coating to both sides to preserve detail and reduce reflections. Additionally, the filter includes an infrared protection coating layer that helps limit unwanted infrared light that can cast a red color into photos when shooting at small apertures.

Performance characteristics

This neutral density filter maintains neutral coloration and does not affect the image color. It delivers ultra low color cast and ultra low reflection, while avoiding vignetting. The optical design supports high definition imaging. Because the nano coating repels water and oil, the filter resists smudges and is easier to keep clean in the field.

Key features

• Ultra Low Color Cast, Ultra Low Reflection
• No Vignetting
• High Definition
• Nano Coating on Both Sides, Water & Oil Repellent
• Environmental Optical Lens glass (H-K9L)

Available densities and flexibility

The NiSi Nano IR Medium Graduated Neutral Density filters in size 150x170 mm are available in the following maximum effect increments: 2 stop, 3 stop and 4 stop. The product title also specifies ND16 1.2, which indicates the density offered for this particular SKU.

How to use this filter

Insert the filter into a suitable square filter holder and slide it up or down to position the graduated transition where needed. Because the filter is repositionable in the holder, you can recompose the scene and align the transition with horizons, building lines, or mountain ridges. The medium-edged transition works well for scenes with elements that intrude into the sky.

FAQ

Question: What kind of scenes is this medium GND best for?
Answer: Use it for landscapes that include buildings, mountain ridges or trees that cross the skyline. The medium transition balances the sky and foreground exposure without abrupt edges.

Question: Does the filter change color or add vignetting?
Answer: No. The filter is designed for ultra low color cast and ultra low reflection, and it is specified to produce no vignetting, so it preserves scene coloration and image corners.

Question: How does the infrared coating help my images?
Answer: The infrared protection coating helps reduce unwanted infrared light that can introduce a red cast when shooting at small apertures, thereby helping to maintain natural color in the final image.

Question: Is the glass durable and easy to maintain?
Answer: Yes. The filter uses high quality optical glass (H-K9L) instead of resin, and the nano coating on both sides repels water and oil, which makes it easier to clean and keeps optical detail intact.

Question: Which density options can I choose from?
Answer: The NiSi Nano IR Medium GND 150x170 mm is available in 2 stop, 3 stop and 4 stop options, with the ND16 1.2 density specified for this particular product variation.