Astro Clip-in Filter For Sony FE – Magnetic

Our Kolari Magnetic Clip-in Filters for Sony FE-Mount (Astro) provide several filter options to help enhance your Astrophotography images. Engineered with Kolari’s professional-level optics, these filters are available in two options: UV/IR Cut H Alpha Pass, and Light Pollution Filter.

Crafted with the premium optical glass we’re known for, our Kolari Magnetic Clip-in Filters for Sony FE-Mount are finished with advanced anti-reflective and anti-smudge hard coatings to boost light transmission and reduce flares and ghosting. These multi-coated filters are also hydrophobic, dust-resistant, and scratch-resistant, making them easy to clean and built to withstand the demands of any shooting environment.

Each filter is housed in a precision CNC-machined aluminum magnetic frame designed for full-frame Sony FE-mount cameras. This rear-mounted solution works seamlessly with lenses that lack front filter threads and can also be paired with external lens filters, allowing for flexible, multi-layered filtration setups.

Our Light Pollution Filter is designed to enhance night sky photography by selectively blocking the most common wavelengths emitted by artificial lighting, such as streetlights, mercury vapor, and sodium lamps. By reducing this unwanted glow, the filter helps restore natural contrast to the night sky, making stars, nebulae, and other celestial objects stand out with greater clarity.

Perfect for astrophotographers shooting in urban or suburban environments, this filter enables deeper exposures, improved color balance, and more defined detail in your images.

This filter is compatible with both stock and full-spectrum cameras.

Our UV/IR Cut Filter (H-Alpha Pass) is specially designed for astrophotographers using full-spectrum converted cameras. It blocks unwanted ultraviolet and infrared light while allowing critical emission lines—specifically H-alpha (656nm) and Sulfur II (672nm)—to pass through, making it ideal for capturing deep-sky objects like nebulae with enhanced clarity and detail.

With a similar transmission profile to our standard UV/IR Cut Hot Mirror, this version offers an expanded spectral window tailored for emission line imaging. When paired with a full-spectrum modified camera, it delivers over 4× greater sensitivity to the H-alpha line and more than 6× greater sensitivity to Sulfur II compared to an unmodified stock camera. This dramatic boost in signal allows for shorter exposures, finer details, and better contrast in faint astronomical targets.

While designed with astrophotography in mind, this filter is also effective at minimizing IR contamination when used with stock unconverted cameras that experience residual IR leakage.

Compatible With: Sony A7, Sony A7II, Sony A7III, Sony A7R, Sony A7R II, Sony A7R III, Sony A7R IV, Sony A7R V, Sony A7S, Sony A7S II, Sony A7S III, Sony A9, Sony A9 II, A7 IV, Sony FX3, Sony A1*, Sony A7C*, Sony A7C II* Sony A7 V

NOT compatible with Sony FX6

*The Sony A1 & A7C require a magnetic mounting plate to work with our magnetic clip-in filters. If you own an A1 or A7C, please select “YES” in the “Magnetic Mounting Plate” drop-down menu.

We understand that Astrophotography can be challenging, but don’t worry, we have many resources and tutorials available for astrophotographers.

Here are a few of our most popular tips and tricks below:

Choosing a Full Spectrum or H-alpha Conversion for Astrophotography

Packing for Wilderness Backpacking for Astro and Infrared Photography

Narrowband Hydrogen Alpha Filters for Landscape Astrophotography

Choosing a Camera Brand for Astrophotography

Astrophotography thoroughly tests the optics of any camera system and lens. Ultrawide lenses are particularly challenging because of the high rear incidence angles involved where any additional glass has the possibility of inducing a field curvature which can cause loss of corner sharpness on a lens-by-lens basis; this effect is most noticeable at wide apertures. While this should always be a consideration with any ultra wide lens, we typically only see issues with astrophotography where the target subject is a series of geometrically perfect points of light at infinity, shot at wide apertures.