This 10-stop, 49mm NiSi PRO Nano IRND 49mm 10-Stop Filteris an ND filter with a 1000x filter factor that provides a 10-stop exposure reduction. Its 3.0 optical density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily. Neutral density filters are intended to not affect the coloration of the image and are ideal for pairing with other filters.

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 a high level of neutrality across the visible and infrared spectrums in order to eliminate color casts and ensure cleaner, truer blacks when using the NiSi 49mm PRO Nano IRND 3.0 Filter, 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 49mm PRO Nano IRND 3.0 Filter is constructed from optical glass for clarity as well as color fidelity, and features a brass filter ring to minimize the potential for vignetting while enhancing durability and jamming prevention.

3.0 Optical Density    NiSi Optical Nano Coating    Optical Glass Construction    Brass Filter Ring    49mm Front Filter Threads    Neutral Results, Visible & IR Spectrums    Darkens Entire Image    Allows Wider Aperture    Allows Reduced Shutter Speed    Includes Plastic Case

3.0 neutral density filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 10-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

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.

Brass filter ring helps to prevent vignetting, jamming, and provides additional strength.

Side knurling to provide a more textured grip when mounting or removing it from a lens.

49mm front filter threads allow for use with other filters.

Plastic case included for storage and transport.

Related Questions and Answers

Q: 1. will it fit with the Sigma 60-600mm lens hood?

A: Yes, the Sigma Lens Hood for 60-600mm f/4.5-6.3 DG DN OS Sports Lens is compatible with the front threads on the NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (105mm).

Q: 2. 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: 3. How thick are these filters? I'm looking for one 4mm thick to fit my mattebox tray.

A: Yes, these filters are 4mm thick.

Q: 4. Will this fit on top of the NiSi Swift VND system?

A: NiSi Swift True Color Pro Nano CPL for True Color VND and Swift System (82mm) does not front threads. You can connect the NiSi 82mm True Color Pro Nano Circular Polarizing Filter first and then attach the Variable ND filter on top if necessary. However, the VND filter mention above already has a coat of CPL on the glass.

Q: 5. 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.

Q: 6. Does the filter has IR CUT?

A: According to the manufacturer, yes, the NiSi 82mm True Color ND-VARIO Pro Nano 1-5 Stop Variable Neutral Density Filter does have infrared IR cut properties built into the filter.

Q: 7. Does the 43mm filter have 43mm filter threads int he front of it? Or like the 82,, does it have larger 86mm filter threads in?

A: The NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (43mm) has 43mm rear filter threads and 46mm front threads.

Q: 8. 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: 9. Does anyone know what it's: "IR Attenuation" ?

A: IR attenuation in the Ice 82mm Slim IRND1000 Filter (10-Stop) means that the filter reduces the amount of infrared light that can reach the camera sensor.

Q: 10. Does the filter have a threaded front element to allow for additional filter be threaded on the front?

A: The NiSi 82mm True Color ND-VARIO Pro Nano 1-5 Stop Variable Neutral Density Filter has 86mm front threads. The 86mm front filter thread is larger than the rear thread to reduce the chance of vignetting on wide-angle lenses. It is recommended that this filter is used on 35mm or longer focal lengths lenses.