This 6-stop, 180 x 180mm NiSi Nano IRND Filter 180x180mm 6-Stopis an ND filter with a 64x filter factor that provides a 6-stop exposure reduction. Its 1.8 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed without overexposing your image. 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 180 x 180mm Nano IRND 1.8 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 180 x 180mm Nano IRND 1.8 Filter is constructed from optical glass for clarity as well as color fidelity, and measures 2mm thick.

1.8 Optical Density    NiSi Optical Nano Coating    Optical Glass Construction    Darkens Entire Image    Allows Reduced Shutter Speed    Allows Wider Aperture    Neutral Results, Visible, & IR Spectrums    Includes Leatherette Pouch

180 x 180mm neutral density filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 6-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.

Leatherette pouch included for storage and transport.

Related Questions and Answers

Q: 1. Since this filter uses polarizing material, I wonder if it can be used as a polarizer?

A: No,NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (58mm) does not have polarizing effects. This filter will only add 1-5 stops darker to your exposure. If you need a 58mm polarizing filter please open the link below. NiSi 58mm True Color Pro Nano Circular Polarizing Filter BH #NICPLTCPN58 • MFR #NIR-TCCPL-58 https://www.bhphotovideo.com/c/product/1706867-REG/nisi_nir_tccpl_58_58mm_true_color_pro.html

Q: 2. will this fit in a drop in filter tray for canon L glass, like the 200-400 f4? Provided you take off the thumb stud.

A: Unfortunately, the NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (52mm) will not fit in that lens. To fit in a drop-in filter holder, the filter needs to be very thin, the front has to be the same diameter as the back, and the filter cannot have the knurling on the outside of the filter.

Q: 3. 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: 4. 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: 5. Does this come with gasket already attached?

A: Yes.

Q: 6. Hi, i wold like yo know if this model it's compatible with the Sony PZ28-135 mm?

A: Yes, the NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (95mm) is compatible with the Sony FE PZ 28-135mm f/4 G OSS Lens.

Q: 7. If you can’t use it with the lens hood on the Sony 2470 version two then what’s the answer?

A: Like most variable ND filters NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (77mm) has a larger front thread to reduce the risk of vignetting. In this case the Nisi 77mm filter has an 82mm front which makes the overall size too large to fit in a manufacturers specific lens hood. One option you could use is a generic 82mm screw on hood instead. https://bhpho.to/2M1NP5B. The filter would attach to the lens and then the screw on hood attaches to the filter.

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. I am going to use this filter on my 60-600mm lens. Doesn't X-effect occur at any focal length?

A: The NiSi True Color ND-VARIO Pro Nano 1 to 5-Stop Variable ND Filter (105mm) does not create an X pattern at all. An "X" pattern tends to happen on lower end variable ND filters that cover a broader stop range such as 2 to 8 stops.

Q: 10. What is the front filter thread MM diameter?

A: The NiSi 95mm True Color ND-VARIO Pro Nano 1-5 Stop Variable Neutral Density Filter has a front 95mm size thread.