Solar Filter

Shoot the sun
at 16.6 stops.

ND100000 (5.0) optical glass with UV and IR cut. 16.6 stops, so you record the sun's detail instead of a blown out white disc. A photographic filter, for photography only.

ND100000 (5.0)
16.6 stops
UV and IR cut
6 thread sizes

Shop filters Before you shoot

This filter is not appropriate for direct solar observation with the naked eye. It is a photographic filter and should be used exclusively for photographic purposes. Read NiSi's cautions

Learn the system

Before you shoot Find your size Why NiSi Solar Sample frames Specifications FAQ

Before you shoot

NiSi's cautions, in full.

These are the seven cautions we ship with every Solar Filter, reproduced word for word. Read them before the filter goes near the sun.

It is important to note that the filter is not appropriate for direct solar observation with the naked eye, and should exclusively be used for photographic purposes.
Check the solar filter for damage before each use by holding it up to a bright light (not the sun). Secure the filter properly by screwing it fully onto the lens.
The NiSi Solar Filter is not suitable eye protection for extended view of sun or solar eclipses. Do not look directly or indirectly into the sun without appropriate eye protection.
The Solar Filter should be installed in front of the camera lens or telescope before trying to align it with the sun. Point the camera away from sun when attaching and removing the solar filter.
Do not use an optical viewfinder when aligning your camera or telescope with the sun. It is recommended to use the live view feature of the camera for aligning it with the sun and for viewing.
Do not leave a camera unattended where a child or inexperienced adult could point it at the sun without the filter adequately attached.
The filter may absorb solar energy and get hot during use. Use extra care when removing it.

Looking at the sun is a different job, with different equipment

A solar filter on the front of a lens is for the camera. For your own eyes, our eclipse guide is explicit: it is never safe to look at the sun directly without certified ISO 12312-2 eclipse glasses or a handheld solar viewer, and sunglasses are not a substitute, no matter how dark they are.

The full shooting plan, including exposure, focus and aiming by live view, is in our guide to the 12 August 2026 eclipse.

The seven cautions above are quoted from the Cautions section of the NiSi Solar Filter product pages. Nothing has been added to them or left out of them here.

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Find your size

One filter, six threads.

Every size is the same glass, the same ND100000 (5.0) density and the same UV and IR cut. Pick the one that matches your lens filter thread.

NiSi Solar Filter standing upright on white, the frame engraved UV/IR Cut ND100000 (5.0) 16.6 Stops

58mm to 95mm

Solar Filter Pro Nano UV/IR Cut

Optical glass in an aluminum frame, with a standard screw-in thread. It goes on the front of the lens, and it stays on for the whole event.

Your thread size is printed on the front of the lens or inside the lens cap, next to the diameter symbol.

58mmSolar Filter 67mmOut of stock 72mmOn back order 77mmSolar Filter 82mmSolar Filter 95mmSolar Filter

Shooting a 105mm thread? The 95mm filter fits a 105mm lens with the 105-95mm step down adaptor, or buy both together as the 95mm / 105mm Solar Bundle.

Lenses with different threads each need their own filter, or a step down adaptor from the larger thread. Not sure which size fits? Ask our team.

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Why NiSi Solar

Density alone is not enough.

The sun is the brightest thing you will ever point a camera at. Getting a clean disc out of it takes more than a very dark piece of glass.

01 / 04

A disc, not a white blob

ND100000 (5.0) is a 16.6 stop reduction, a factor of one hundred thousand. It brings the solar disc down to a level an ordinary camera can record, so you capture the sun's details without overexposing your images.

The solar disc photographed through a NiSi Solar Filter, rendered neutral with a scatter of sunspots across it

02 / 04

UV and IR, cut

Many very dark neutral density filters leak ultraviolet and infrared, because the coatings that block visible light do not necessarily block the wavelengths either side of it. This one is designed to cut UV and IR, which is what gives the most color neutral result when shooting the sun.

Close up of the NiSi Solar Filter frame engraved UV/IR Cut ND100000 (5.0) 16.6 Stops

03 / 04

Nano coated against ghosting

Against a subject this bright, internal reflections are a real and visible problem. The nano coating reduces reflections and glare, which is what keeps a second, fainter copy of the sun from turning up elsewhere in the frame.

A partial solar eclipse photographed through a NiSi Solar Filter, the moon biting into the lower left of the disc

04 / 04

Screws straight onto the lens

Optical glass in an aluminum frame, on a standard filter thread, in six sizes from 58mm to 95mm. There is no adapter system to buy into, and it is lightweight and compact enough to keep in the bag.

NiSi Solar Filter lying flat on white, showing the deep red glass and the aluminum frame

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Sample frames

What the filter records.

Full disc, sunspot detail and partial phases, all captured through a NiSi Solar Filter.

The full solar disc with sunspots, photographed through a NiSi Solar Filter — Full disc with sunspotsSolar Filter

The full solar disc rendered warm orange with sunspot detail, photographed through a NiSi Solar Filter — Full disc, sunspot detailSolar Filter

The solar disc rendered close to neutral with a group of sunspots, photographed through a NiSi Solar Filter — Sunspot groupSolar Filter

A partial solar eclipse with the moon covering about half the disc, photographed through a NiSi Solar Filter — Partial phaseSolar Filter

A deep partial eclipse reduced to a thin crescent, photographed through a NiSi Solar Filter — Deep partial phaseSolar Filter

Three phases of a partial solar eclipse arranged in one frame, photographed through a NiSi Solar Filter — Phases in sequenceSolar Filter

Every frame here was captured through a NiSi Solar Filter. Our own instruction for aiming and viewing is the camera's live view, never an optical viewfinder.

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Specifications

The numbers.

Find your size

Density	ND100000 (5.0)
Light reduction	16.6 stops
Spectrum	Designed to cut UV and IR light, for the most color neutral result when shooting the sun
Coating	Nano coating, to reduce reflections and glare
Glass	High quality optical glass
Frame	Aluminum
Mount	Standard screw-in filter thread
Thread sizes	58mm, 67mm, 72mm, 77mm, 82mm, 95mm
105mm lenses	The 95mm filter with the 105-95mm step down adaptor, sold separately or as a bundle
Intended use	Photographic use only. See Before you shoot for NiSi's full cautions.

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Questions

Before you buy.

Can I look at the sun through this filter?

No. The filter is not appropriate for direct solar observation with the naked eye, and should exclusively be used for photographic purposes. It is also not suitable eye protection for extended view of the sun or solar eclipses: do not look directly or indirectly into the sun without appropriate eye protection. For looking with your eyes, our eclipse guide specifies certified ISO 12312-2 eclipse glasses or a handheld solar viewer, and says sunglasses are not a substitute.

Can I aim through my camera's optical viewfinder?

No. NiSi's instruction is to not use an optical viewfinder when aligning your camera or telescope with the sun, and to use the live view feature of the camera for aligning it with the sun and for viewing.

How do I fit it and take it off?

Check the filter for damage before each use by holding it up to a bright light, not the sun, then screw it fully onto the lens so it is properly secure. Fit it to the front of the camera lens or telescope before trying to align with the sun, and point the camera away from the sun while you are attaching or removing it.

Does the filter get hot?

It can. NiSi's caution is that the filter may absorb solar energy and get hot during use, so take extra care when removing it.

Which size do I need?

Match the filter to your lens filter thread. The size is printed on the front of the lens or inside the lens cap, next to the diameter symbol. The Solar Filter is made in 58mm, 67mm, 72mm, 77mm, 82mm and 95mm. A 105mm lens takes the 95mm filter plus the 105-95mm step down adaptor, which is also sold as a bundle with the filter.

Why does UV and IR cut matter on a solar filter?

Density on its own is not enough. Many very dark neutral density filters leak ultraviolet and infrared, because the coatings that block visible light do not necessarily block the wavelengths either side of it. The NiSi Solar Filter is designed to cut UV and IR light, which is what gives the most color neutral result when shooting the sun.

Can I use it for anything other than the sun?

Yes. 16.6 stops is a huge reduction, so the same filter will carry a daytime long exposure of several minutes in bright sun, which smooths water and streaks clouds. NiSi has written that up in re-purposing your solar filter for daytime long exposures.

How do I clean it?

Blow off any grit first, then use an alcohol-free lens cleaning fluid on a clean microfiber cloth. Never put anything containing alcohol on the coating. The NiSi Nano Optical Cleaning Kit has a suitable fluid. Whatever you clean it with, check the filter for damage before each use by holding it up to a bright light, not the sun.

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NiSi's cautions, in full.

Looking at the sun is a different job, with different equipment

One filter, six threads.