KANI GND Filter 100x150mm – Ultra Low Reflection

Long Soft GND

Premium Long Soft GND is designed with an extended and exceptionally smooth transition, making it ideal for scenes where a natural balance is required between a bright sky and a darker foreground. Compared with standard graduated filters, the gradation extends over a wider area, allowing photographers to achieve a softer and more seamless exposure blend.

This type is particularly effective for mountain landscapes, rolling hills, valleys, forests, and scenes where the horizon is irregular rather than flat. Because the transition is longer and more gradual, the filter helps maintain a natural appearance without creating an obvious dividing line in the final image.

The concept was developed in response to requests from photographer Mamoru Watanabe, who is known for long-term Mt. Fuji photography. In practical use, it is highly effective not only on its own, but also when combined with a Switch Holder and another lighter ND filter to strengthen only selected areas of the frame.

It is also a useful choice for portrait and environmental photography when the sky is included in the composition and a softer top-to-bottom tonal balance is preferred.

KANI’s Premium coating technology is specially designed to reduce reflections between the ND area and the clear area. Combined with German B270 optical glass and ultra-precise double-sided polishing, the filter maintains excellent flatness, sharpness, and accurate gradation performance.

Visible light transmission is extremely high, and the filter is engineered to minimize blue cast during long exposure photography. The durable oil-resistant, water-repellent, and dust-resistant coating also makes cleaning quick and practical in outdoor conditions.

Soft GND

Premium Soft GND is designed with a smooth and natural transition, making it especially effective for sunrise, dawn glow, sunset, and other scenes where the brightness difference between sky and foreground needs gentle balancing. It helps control the brighter upper part of the frame while preserving a realistic and natural tonal flow toward the center.

Because the gradation is soft and gradual, this filter is ideal for landscapes with slightly uneven horizons, such as mountain ranges, lakes, coastlines, forests, and open countryside scenes. It reduces the risk of an obvious transition line appearing in the final image, which is one of the most important points when aiming for a natural result.

Soft GND is often used in sunrise and sunset photography, but it is also highly practical in daylight landscape work when the sun itself is not directly included in the composition. It can also be combined with ND filters for long exposure photography, allowing the sky brightness to be controlled while smoothing moving water or clouds.

KANI’s Premium coating uses advanced low-reflection technology to suppress reflections between the ND area and the clear area. German B270 optical glass and ultra-precise double-sided polishing contribute to excellent flatness, high visible light transmission, and consistent image quality.

The filter is engineered to minimize blue cast during long exposure photography, and its strong oil-, water-, and dust-resistant coating helps make cleaning quick and practical in outdoor shooting conditions.

Medium GND

Premium Medium GND is designed with a 3cm transition area, placing it between the wider gradation of Soft GND and the tighter transition of Hard GND. It is ideal for photographers who want stronger control than a soft gradation, while still maintaining a more natural blend than a hard-edge type.

This filter is especially useful when the horizon is partially defined but not perfectly flat, such as low mountain ranges, rolling landscapes, urban skylines, or scenes where the sky and land need more balanced yet controlled separation.

Medium GND offers a highly practical middle-ground solution, making it one of the most versatile types in the graduated ND lineup. It helps control the upper brightness more decisively than Soft GND while avoiding the stronger and more abrupt feel of Hard GND.

KANI’s Premium coating minimizes reflections between the ND and clear areas, and the combination of German B270 optical glass with ultra-precise double-sided polishing helps maintain excellent flatness, accurate gradation, and sharp image quality.

Visible light transmission is extremely high, blue cast during long exposure photography is minimized, and the durable oil-, water-, and dust-resistant surface allows quick cleaning during outdoor shooting.

Hard GND

Premium Hard GND is designed for scenes with a strong brightness difference between sky and land, especially when the horizon line is relatively clear. It provides stronger control over bright skies while helping preserve detail in darker foreground areas.

Unlike traditional hard-edge filters that can feel too abrupt, KANI’s design retains a carefully controlled transition through the center, making it easier to use while still delivering a powerful effect. This makes the filter practical not only for flat horizons, but also for demanding scenes where stronger tonal control is required.

Hard GND is particularly useful for seascapes, coastal scenes, flat open landscapes, bright daylight conditions, and backlit photography where the upper part of the frame is significantly brighter than the foreground.

It can also be used together with other filters, including Dual Purpose or ND filters, when more advanced tonal control is needed for difficult lighting conditions.

German B270 optical glass, ultra-precise double-sided polishing, and Premium low-reflection coating help ensure high flatness, accurate gradation, minimal blue cast during long exposures, and excellent resistance to oil, water, and dust.

Reverse GND

Premium Reverse GND is specially designed for sunrise and sunset photography, where the brightest light is concentrated near the horizon line. Unlike standard graduated ND filters, Reverse GND places its strongest density around the center and gradually becomes lighter toward the top, matching the way natural horizon light behaves at these times of day.

This design makes it highly effective for seascapes, wide landscapes, and horizon-based compositions where ordinary GND filters cannot control the brightest central light effectively enough.

Reverse GND helps preserve sky detail around the sun while keeping the foreground exposure balanced, making it one of the most important tools for dramatic sunrise and sunset shooting.

KANI’s Premium coating technology suppresses reflections between the ND area and the clear area, while German B270 optical glass and ultra-precise double-sided polishing help maintain excellent flatness and clear image quality.

The filter also offers high visible light transmission, minimal blue cast during long exposure photography, and a durable oil-, water-, and dust-resistant surface that is easy to maintain in outdoor conditions.

Dual Purpose GND

Premium Dual Purpose GND is a highly versatile graduated ND filter that can produce different styles of effect in a single filter simply by reversing the insertion direction. This innovative concept allows one filter to behave like both a Soft GND and a Hard or Reverse-style filter depending on how it is positioned.

The 0.75 version was intentionally designed with a slightly milder maximum density than the more common 0.9, helping prevent the effect from becoming too strong in practical shooting conditions. This makes it especially attractive for photographers who want flexible tonal control without carrying multiple filters.

By changing the insertion direction, one filter can offer multiple useful looks, making it a practical choice for travel, landscape, and rapidly changing light conditions.

This specification was developed over approximately six months in response to requests from photographer Junichi Date, with repeated testing and refinement before the final version was completed.

KANI’s Premium anti-reflection coating greatly reduces reflections between the lens and the filter, even when the sun is included in the frame, helping maintain contrast and clean image quality.

Narrow Dual Purpose GND

Narrow Dual Purpose GND is a specialized variation of the Dual Purpose Filter with a narrower light reduction area than the standard model. It is designed for photographers who need more localized control in difficult sunrise and sunset situations.

Compared with ordinary GND filters and the standard Dual Purpose Filter, it is especially effective when the sun appears through breaks in the clouds or when bright light is concentrated within a narrower section of the frame.

This filter is also highly effective when using telephoto lenses. In tighter compositions, its narrower gradation area provides more precise control and more comfortable handling than the standard Dual Purpose design.

KANI’s world-class low-reflection coating minimizes reflections between the lens and the filter even when the sun is included in the frame, helping maintain contrast, clean highlights, and image clarity.

Sky Blue Dual Purpose GND

Sky Blue Dual Purpose GND is a unique graduated ND filter that not only controls brightness, but also adds a natural blue tone to cloudy or whitish skies. It represents a distinctive half ND concept that combines exposure control with subtle sky enhancement.

Like KANI’s standard Dual Purpose Filter, it can provide two different effects in one filter by reversing the orientation, allowing it to behave in both Soft and Hard styles. This model was also developed in close collaboration with photographer Junichi Date.

Unlike the conventional Dual Purpose 0.75, this filter uses a gentler ND 0.6 density. As a result, overcast or pale skies do not become unnaturally blue. Slightly hazy blue skies can be given a little more richness, while nearly white skies can be rendered with a moderate and natural blue tone.

It is also useful in situations where a polarizing filter may produce uneven polarization in the blue sky. To support this use, the complete ND area of this model is wider than that of the standard Dual Purpose Filter.

Because it uses a special color coating, its reflection characteristics differ from those of the standard Dual Purpose Filter. In backlit situations, especially when the sun is included in the frame, reflections may occur.

Main Specifications
Dimensions: 100×150×2mm
Maximum light reduction: 0.6 (ND4)
Additional effect: Adds a natural blue tone to cloudy or whitish skies, approximately equivalent to an LBB5 effect

Inverted Triangle GND

Inverted Triangle GND is designed for scenes where the sun rises between cityscapes or mountain ridges on both sides of the frame. It is intended for vertical composition, where its unique shape can more effectively control concentrated central brightness.

The maximum light reduction is ND8, making it effective for suppressing strong brightness around the center while preserving a more natural tonal balance in the surrounding areas of the image.

This special shape is useful for sunrise and sunset compositions where ordinary straight-edge GND filters cannot control the light in a localized and central way.

The filter uses Premium coating and world-class low-reflection treatment to suppress ghosting and flare. German B270 optical glass and ultra-precise double-sided polishing provide excellent flatness and high visible light transmission.

It is also engineered to minimize blue cast during long exposure photography. The strong oil-, water-, and dust-resistant coating allows the surface to be cleaned quickly and easily, even with a normal cloth, which is especially practical during outdoor shooting.

Obtuse Triangle GND

Obtuse Triangle GND is designed for horizontal compositions where the sun rises between cityscapes or mountain ridges on both sides of the frame. Its special gradation shape helps control strong central brightness more effectively than a standard straight GND filter.

With a maximum light reduction of ND8, it is suitable for scenes where bright central light needs to be suppressed while keeping the surrounding area naturally balanced. This makes it especially useful for dramatic sunrise and sunset photography with distinctive light concentration near the center.

The filter features Premium coating and world-class low-reflection treatment to reduce ghosting and flare. German B270 optical glass and ultra-precise double-sided polishing ensure high visible light transmission, excellent flatness, and dependable image quality.

It is engineered to minimize blue color cast during long exposure photography, and its durable oil-, water-, and dust-resistant surface makes it easy to clean quickly and continue shooting without delay.

Sunset Orange / Sunset Yellow

KANI Sunset Orange and Sunset Yellow are special sunset color glass filters developed in response to repeated requests from photographers over many years. They are designed primarily to enhance sunrise and sunset scenes by adding richer and more expressive warm color gradation to the image.

These filters are ideal for photographers who want to strengthen the atmosphere of golden-hour scenes while still maintaining a photographic and believable look. Depending on the selected color variation, you can create either a stronger orange-toned warmth or a brighter yellow-toned glow.

While many filters in this category are made from resin, this product is made from glass and features the same premium low-reflection coating used on other KANI filters. This helps suppress flare and unwanted reflections while maintaining clarity, durability, and dependable image quality in practical field use.

The filters can also be used smoothly together with KANI GND filters and other square filter systems, allowing photographers to achieve their intended visual result more directly and efficiently. With creative use, they can even help produce expressive scenes that go beyond what would naturally appear to the eye.

This product represents the result of a four-year development challenge focused on combining artistic color rendering with the optical quality and usability expected from the KANI filter lineup.