10 Best Film Solar Observation Filters for Safe Viewing and Photography in 2026

Choosing the right solar filter is essential for safe solar viewing and photography. The options in this roundup include cut-to-size film sheets, threaded camera filters, and fitted telescope filters.

Use the buying guide below to compare compatibility, construction, certification, and ease of installation before observing or photographing the Sun.

Best 10 Film Solar Observation Filters Picks for 2026

DIY Telescope Sheet – 8-Inch Black Polymer Filter

This 8-by-8-inch Thousand Oaks Optical sheet is a practical choice for building custom film solar observation filters for telescopes, binoculars, or cameras. Its black polymer construction is designed for viewing sunspots and granulation, with the Sun appearing a natural orange color.

Best For: DIY observers who need a cut-to-size sheet for compatible optical equipment.

Pros:

• Works with telescopes, binoculars, and cameras.
• Black polymer has filtering properties protected within the substrate.
• Backed by a manufacturer with more than 30 years of solar-filter experience.
• Costs less than many factory-made filters when used for a DIY build.

Cons:

• Requires you to make and securely attach the filter yourself.
• The sheet is not water resistant.
• Careful attachment with sticky tape is essential during use.

This is a flexible, economical option for custom projects, provided the finished filter is firmly secured before observing.

Threaded Camera Pick – Hyperion 46mm Solar Film Filter

The Hyperion 46mm threaded filter is made for photographers who want a straightforward front-of-lens solution for film solar observation filters. It screws onto a compatible 46mm camera lens and is designed for safely photographing the Sun, including sunspots and eclipses, when installed and used correctly.

Best For: Camera users with a 46mm threaded lens who want a ready-made filter for solar photography.

Pros:

• Threaded design attaches directly to a 46mm camera lens.
• Solar film was independently tested to block 99.999% of the Sun’s rays.
• Made in the USA by Seymour Solar, an experienced solar-filter manufacturer.
• Includes a foam case and has a water-resistant construction.

Cons:

• Limited to lenses with a 46mm filter thread.
• The 90-day guarantee requires the product to remain in its sealed plastic bag for returns.
• It is intended for camera lenses rather than general-purpose DIY sheet projects.

For compatible camera gear, the threaded format is more convenient than cutting and mounting loose film, while the included case helps with storage.

Large DIY Sheet – BP-12 12-Inch Solar Filter

The BP-12 provides a larger 12-by-12-inch sheet for making film solar observation filters for telescopes, finders, binoculars, cameras, or a pocket eclipse viewer. Its black polymer material produces a solar-yellow-to-orange image and has a flat surface compared with thinner films that may show wrinkles and creases.

Best For: DIY builders who need extra material or coverage for larger optical equipment.

Pros:

• Large 12-by-12-inch format supports varied custom builds.
• Compatible with telescopes, finders, binoculars, cameras, and pocket eclipse viewers.
• Black polymer is commonly used for observing sunspots and granulation.
• Produces a solar yellow-orange image with a flat surface.

Cons:

• Requires cutting, mounting, and securing the filter before use.
• Ships in cardboard without a storage case.
• Not water resistant.

The generous size makes this a versatile sheet for custom applications, but buyers should plan for both fabrication and safe storage after opening.

Protected Camera Option – 58mm Threaded Polymer Filter

This 58mm Spectrum Telescope filter offers a ready-made full-aperture design for film solar observation filters on compatible camera lenses. Its black polymer film permits a natural yellowish-orange solar image, while the foam-lined shipping box and plastic storage box help protect the filter between uses.

Best For: Camera owners with a 58mm thread who want a durable, storable full-aperture filter.

Pros:

• Threaded 58mm format fits compatible camera lenses.
• Full-aperture design allows the camera a broad view while reducing atmospheric turbulence.
• Made from durable 0.002-inch black plastic polymer.
• Includes protective packaging and a reusable storage box.

Cons:

• Only suitable for equipment with a 58mm filter thread.
• Has a 30-day manufacturer warranty.
• The filter has no coating.

This is a convenient alternative to assembling a loose sheet, especially for photographers who value dedicated storage and a full-aperture threaded design.

DIY Value Pick – Thousand Oaks 6×6 Solar Filter Sheet

This 6-by-6-inch polymer sheet is a flexible, budget-conscious option for building film solar observation filters for compatible telescopes, binoculars, or cameras. It produces a natural orange solar image and lets you create a custom-fit filter rather than buying a factory-made model.

Best For: DIY projects and observers who need one sheet for adapting multiple optical devices.

Pros:

• Works with telescopes, binoculars, and cameras when properly fitted.
• Silver-black polymer is designed for viewing sunspots and granulation.
• Offers a lower-cost alternative to factory-made filters.
• Produces a natural orange-colored Sun.

Cons:

• Requires you to make the filter mount yourself.
• Must be securely attached with sticky tape before observing.
• The 6-by-6-inch sheet may not suit larger front apertures.

This is the most adaptable choice of the three, but its safety depends on careful construction and secure attachment. Choose it if you are comfortable making a reliable filter cell for your equipment.

Dedicated 8-Inch Fit – Celestron EclipSmart 8-Inch Solar Filter

For owners of compatible 8-inch Celestron telescopes, this EclipSmart is a purpose-built option among film solar observation filters. It is designed for 8-inch Schmidt-Cassegrain and EdgeHD models, with two hook-and-loop straps for a snug objective fit.

Best For: Celestron 8-inch Schmidt-Cassegrain and EdgeHD users viewing eclipses, sunspots, or the Sun on ordinary days.

Pros:

• Conforms to the ISO 12312-2:2015(E) standard stated by the manufacturer.
• Compatible with Celestron 8-inch Schmidt-Cassegrain and EdgeHD telescopes.
• Two hook-and-loop straps help secure the filter to the telescope objective.
• Orange-tinted film supports natural-looking visual views and images.

Cons:

• Its fit is specialized for compatible 8-inch Celestron telescopes.
• Less versatile than a universal filter for mixed equipment.
• Provides one filter rather than a multi-piece kit.

This filter is a straightforward match when you own one of the listed 8-inch Celestron telescope families. Its dedicated fit and stated ISO compliance make it more convenient than fabricating a sheet filter for that setup.

Universal Fit Choice – Celestron EclipSmart Universal Solar Filter

This folding Celestron filter is the most flexible of these film solar observation filters for equipment with a 75-to-100mm outside objective diameter. Adjustable side panels and an elastic band help fit it to telescopes, spotting scopes, or DSLR cameras.

Best For: Observers switching between compatible telescopes, spotting scopes, and DSLR camera lenses.

Pros:

• Fits objective diameters from 75mm to 100mm.
• Works with compatible telescopes, spotting scopes, and DSLR cameras.
• Folds flat for storage in the included reusable bag.
• Orange-tinted film is intended for visual observing and image capture.

Cons:

• Not suitable for objectives outside the 75-to-100mm range.
• Requires adjustment of the side panels and elastic band for each setup.
• It is not water resistant according to the supplied specifications.

This is the strongest all-around option when your equipment falls within its stated diameter range. The adjustable design is convenient for multi-device use, while the folding format makes transport and storage simple.

Made-in-USA Film Pick – Hyperion Telescope Solar Filter

The Hyperion Solar Film Telescope Filter is a practical choice for shoppers comparing film solar observation filters for telescopes, refractors, binoculars, viewfinders, and cameras. Its 6.5-inch size is designed for optical tubes measuring approximately 6 1/8 to 6 3/8 inches in diameter, with a clamp-on or slip-on style attachment, nylon thumbscrews, and felt tabs intended to help prevent scratches.

Best For: Telescope owners with compatible 157–162mm optical tubes who want a reusable filter for solar viewing and photography.

Pros:

• Blocks more than 99.99% of visible light along with UV and IR, according to the supplied product information.
• Compatible with telescopes, refractors, binoculars, viewfinders, cameras, and cellphone cameras.
• Includes a foam case and uses felt tabs to help protect the telescope finish.
• Made in the USA by Seymour Solar, which has produced solar filters since 2007.

Cons:

• The stated fit range is limited to optical tubes about 157–162mm in diameter.
• The listed warranty is a 90-day guarantee with return conditions, including keeping the product sealed except for manufacturer defects.

This is a versatile film option, especially for observers who also plan to photograph solar events. Confirm your telescope’s outside diameter carefully before ordering so the attachment fits securely.

Reflector Match – Celestron EclipSmart 127/130mm Filter

For owners of select 127mm and 130mm reflectors, this Celestron EclipSmart is one of the more straightforward film solar observation filters to consider. It is designed for direct solar viewing, conforms to the listed ISO 12312-2:2015(E) standard, and uses two hook-and-loop straps for attachment to compatible telescope objectives.

Best For: Owners of the listed Celestron PowerSeeker, Astro Fi, NexStar, Omni XLT, SkyProdigy, or StarSense Explorer 127mm and 130mm reflector models.

Pros:

• Conforms to the ISO 12312-2:2015(E) international safety standard for filters directly viewing the Sun.
• Compatible with several specified Celestron 127mm and 130mm reflector telescopes.
• Two hook-and-loop straps provide a snug attachment, while a cap protects the filter when stored.
• Its orange tint is intended to provide a natural look for visual observing and imaging.

Cons:

• Compatibility is limited to the listed telescope models and sizes.
• The product is not a universal fit for every 127mm or 130mm telescope.

This filter makes the most sense when your telescope appears on Celestron’s compatibility list. Its secure strap system and included protective cap are useful practical touches for occasional eclipse or sunspot observing.

Schmidt-Cassegrain Choice – Celestron EclipSmart 6-Inch Filter

This Celestron EclipSmart filter is tailored to 6-inch Schmidt-Cassegrain telescopes, making it a focused option among film solar observation filters. It conforms to the listed ISO 12312-2:2015(E) standard, attaches with two hook-and-loop straps, and uses an orange-tinted solar film intended for natural-looking views and images.

Best For: Owners of compatible Celestron 6-inch optical tubes, including the C6, NexStar 6SE, NexStar Evolution 6, Advanced VX 6-inch, and other listed models.

Pros:

• Conforms to the ISO 12312-2:2015(E) standard for filters directly viewing the Sun.
• Designed specifically for compatible Celestron 6-inch Schmidt-Cassegrain telescopes.
• Two hook-and-loop straps are provided for a secure fit.
• Orange-tinted film is intended for natural-looking visual observations and images.

Cons:

• It is specialized for listed 6-inch Celestron telescope models rather than general-purpose use.
• The supplied details identify it as not water resistant.

If you own one of the listed Celestron 6-inch systems, this model offers a simple size-specific solution backed by Celestron’s stated two-year limited warranty and US-based support. Verify your exact optical-tube model before purchase.

How We Picked These Film Solar Observation Filters

We selected options across the main use cases: telescope viewing, binocular and camera adaptation, and solar photography. The lineup includes flexible filter sheets for custom applications, threaded filters for camera lenses, and fitted filters designed for specific telescope sizes. We also considered stated safety standards, aperture and optical-tube compatibility, installation practicality, and the ability to create a secure fit.

For any solar filter, the filter must cover the front aperture completely and remain firmly attached during use. Never use an eyepiece-mounted solar filter or improvise with ordinary photographic film, sunglasses, or unverified materials.

Quick Comparison

Filter type	Best suited to	Main advantage	What to check
Solar film sheet	Telescopes, binoculars, and cameras	Flexible sizing and broad compatibility	Cutting, mounting, and secure front-aperture coverage
Threaded camera filter	Camera lenses	Fast installation on compatible filter threads	Thread diameter and lens clearance
Fitted telescope filter	Specific optical tubes	Convenient, ready-to-use fit	Outer diameter, model compatibility, and retention

Key Buying Factors for Film Solar Observation Filters

Compatibility and Sizing

Measure the outside diameter of the telescope’s optical tube or the camera lens’s filter thread. A filter labeled for a 127mm or 130mm reflector may not fit every instrument with a similar advertised aperture. For sheet material, leave enough margin to build a rigid holder that sits over the front opening without gaps.

Safety and Construction

Look for solar-specific film or a purpose-built solar filter with clear safety claims from the manufacturer. ISO compliance is a useful signal on products that state it, but the filter still needs to be undamaged and correctly installed. Inspect the material for pinholes, scratches, creases, and separation before every session.

Viewing Versus Photography

Camera filters need to match the lens thread and should not vignette or interfere with focusing. Telescope filters are generally selected by optical-tube diameter rather than eyepiece size. Flexible sheets are useful for unusual equipment, but they require careful mounting and should not be held loosely over the instrument.

Installation and Retention

A secure front-mounted filter is more important than a convenient label or low price. Choose a fitted design when you want quick setup; choose a sheet when you need custom sizing or multiple adapters. Check that wind, movement, and handling cannot dislodge the filter.

Who Should Buy Which Film Solar Observation Filters?

Choose a solar film sheet if you use several instruments, need a custom size, or want to build a dedicated holder. A threaded camera filter is the practical choice for photographers whose lenses have a matching thread diameter. A fitted Celestron or Hyperion telescope filter is better for observers who prefer a ready-made solution and can verify the optical-tube measurements.

For beginners, prioritize a clearly specified, front-mounted filter that fits securely rather than choosing solely by aperture size. Experienced solar photographers may prefer film sheets or threaded filters for greater control over camera and lens combinations. Whatever the format, confirm the fit and inspect the filter before each use.