This 3-stop, 100 x 150mm NiSi Nano Medium-Edge Graduated IRND Filter 100x150mm 3-Stopis a rectangular filter that helps to darken specific areas of an image such as bright skies, while allowing for a normal, unaffected exposure in the other regions of the image. The filter is densest at the edge and tapers to clear by the middle, with a medium-edged line of transition between the dense and clear areas. A neutral density filter with a medium-edged line of transition can filter the sky while minimizing its effect on the land. It is particularly useful for images that include elements like rooftops and mountains that protrude into the sky. Neutral density filters do not affect the coloration of the image and this filter provides up to a 3-stop reduction in light from entering the lens.

The design of this filter has been optimized for use with digital sensors and to promote nearly flat attenuation of visible and infrared light. Due to imaging sensors' greater susceptibility to infrared light compared to traditional film, color casts can occur when photographing darker subjects that require increased exposure times. To provide neutrality across the visible and infrared spectrums in order to eliminate color casts and ensure cleaner, truer blacks, one layer of NiSi Optical Nano Coating is applied to each of this filter's surfaces. The Nano coating associated with this filter also results in an improved beading effect when in contact with water or oil for greater cleaning efficiency.

This NiSi 100 x 150mm Nano Medium-Edge Graduated IRND 0.9 Filter is constructed from optical glass for clarity as well as color fidelity, and measures 2mm thick.

0.9 Optical Density    NiSi Optical Nano Coating    Optical Glass Construction    Reduce Exposure in Selective Areas    Medium-Edged Line of Transition    Allows Reduced Shutter Speed    Allows Wider Aperture    Neutral Results, Visible, & IR Spectrums    Includes Leatherette Pouch

100 x 150mm graduated neutral density filter darkens bright areas of an image, such as skies, while leaving the remainder of the frame unaffected.

8x filter factor provides up to a 3-stop reduction of light in selective areas.

Medium-edged line of transition between the dense and clear areas.

Useful for images that include elements like rooftops and mountains that protrude into the sky.

Filter does not affect coloration of the image and is ideal for use with other filters.

Each surface includes one layer of NiSi Optical Nano Coating that attenuates infrared light as well as visible wavelengths, to maintain color neutrality and suppress color casts due to increased exposure times.

Nano coating provides an improved beading effect with water or oil for more efficient cleaning.

Constructed from optical glass for clarity.

Leatherette pouch included for storage and transport.

Related Questions and Answers

Q: 1. How does this "Explorer" differ from the "Nano"?

A: The explorer is also Nano but NiSi Explorer filters are constructed from tempered Schott B270 glass for shock resistance as well as increased optical clarity and color fidelity.

Q: 2. Does this fit under the Sony 24-70 GM II lens hood?

A: The NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (82mm) will not fit the Sony FE 24-70mm f/2.8 GM II Lens (Sony E) with the hood attached.

Q: 3. Can the hard stop be removable?

A: According to the manufacturer, the hard stops on the NiSi 82mm True Color ND-Vario Pro Nano 1-5 Stops Variable ND Filter cannot be removed. If the variable neutral density filter had no hard stops, cross-type X-banding patterns would occur in your images.

Q: 4. Can it be used with NIKKOR 400mm f/2.8 TC VR S Lens which has a drop in filter holder in the back? If not, what are the options?

A: The NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (46mm) is incompatible with the Nikon NIKKOR Z 400mm f/2.8 TC VR S Lens. Instead, get the Kase Tele Drop-In Filter Kit for NIKKOR 800mm f/6.3 VR S and 400mm f/2.8 TC VR S Lenses (1.5 - 5 Stop Vari ND Filter, Magnetic Holder), BH #KAFKNZVND15.

Q: 5. Does the 67mm size cause vignetting when used with the Sony SEL20F18G lens?

A: No, the NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (67mm) will not cause a vignette on lenses, like the Sony FE 20mm f/1.8 G Lens (B&H # SO2018G).

Q: 6. Can the adjustment stick be removed? I'd like to be able to fit this inside a lens hood.

A: Yes the rotating lever is removable.

Q: 7. Can the 46mm size be used as the drop-in filter on the Nikon 800pf/600TC & 400TC lenses?

A: No, the NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (46mm) like most variable filters can not be used as a drop in filter in Nikon 800pf/600TC & 400TC lenses.

Q: 8. will this allow me to use my lens hood (canon RF 28-70 F2.0) ?

A: Yes, one can use the hood from the Canon RF 28-70mm f/2 L USM Lens with the NiSi 95mm True Color ND-VARIO Pro Nano 1-5 Stop Variable Neutral Density Filter. You would need to remove the rotating lever from the filter, as that would get in the way,

Q: 9. Can I get a swift 6-9nd add on filter that will fit on the front of 58m VND?

A: Nisi says that they should have a swift 6-9 ND that works with the NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (58mm) some time in October.

Q: 10. Can I combine this with a Nisi circular polarizer? which should be in front (which determines size i need)?

A: Yes, you can combine with NiSi circular polarizer. The size of the filter will be the same as the ND filter. The circular polarizer should be in front, after the ND filter, circular polarizer is being rotated more often then ND so should have easier access without disturbing exposure. When stacking multiple filters with rotating elements consider having Rubberized Filter Wrench https://www.bhphotovideo.com/c/product/1407950-REG/sensei_48_55mm_rubberized_filter_wrench.html of appropriate size due to possible difficulty of separating the filters when taking of the lens.