The 7-stop, 77mm Edge ND Filter from IRIX is an essential tool for landscape and long-exposure photography. This filter has an optical density of 2.1 and reduces incoming light by 7 stops, allowing more controlled motion blur and depth of field manipulation.

This optical glass filter features waterproof and oil-repellent nanocoating to prevent stains and fingerprints, allowing it to be used in extreme weather conditions. The low-profile frames and knurled edges provide excellent grip and functionality with a reduced potential for vignetting with wide-angle lenses.

2.1 Optical Density    Multicoating and Resistance Coating    Darkens Entire Image Area    Allows Reduced Shutter Speed    Allows Wider Aperture    Includes Filter Case

Related Questions and Answers

Q: 1. Where can I buy the mist edition of this?

A: The Polar Pro 2-5 stop Pro-Mist Variable ND (PMVND) filter is available here: https://bhpho.to/3L0gnHE

Q: 2. Does this block IR as well for Blackmagic cameras?

A: It does not

Q: 3. The filter thread is 67mm on the glass side, but what is the width across the front side, it should be slightly larger than 67mm?

A: According to the manufacturer, the diameter of the filter would be 73.6mm.

Q: 4. What is the outside diameter? I need it to fit inside of a SmallRig mini matte box. My 82mm tiffin is too wide at 98mm. I believe it has to be less than 95mm to be compatible.

A: We measured this at the store and it measured 89.5mm on across the front element.

Q: 5. would these filter work with the lens hood on a sigma 85mm f1.4 DG DN lens?

A: The front thread of these Nisi filters are 77mm in size just like the back is so they should work with a lens hood on the Sigma 85mm f1.4 DG DN lens.

Q: 6. Does this have hard stops?

A: This filter does not have hard stops. The markings are for reference only.

Q: 7. Is there any vignetting at the lowest or highest setting of the VND? I see the Tiffen does a bit from some of those reviews. This is my largest concern. Thanks.

A: We haven't had any reports of vignetting with this filter at the lowest or highest setting.

Q: 8. Does the camera have a hard time auto focusing through the filter i.e is it to dark for auto focus?

A: It is best to pre-focus manually before adjusting the filter to the desired setting.

Q: 9. Does this filter color match the Polar Pro Basecamp Matte Box ND filter?

A: These will both be different in terms of the intensity of ND they include, however colorcast and filter color matching should be the same out of both.

Q: 10. I run the Sony e-mount for both photo and video. Is this the best filter solution for me or is there a better option out there? Also, how much filter would I need outside in bright sun to shoot at f1.4?

A: No, the following workflow ND 4x6 or 100mm ND filters would make a more suitable workflow. Here are the 4x6 filters that we have to offer https://bhpho.to/3I4VM76 Be mindful of the following wide angle lens look into soft transitions filters mid-range lens look into hard transitions filters