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TELESIN UV Protection Lens Filter for DJI Osmo Action 4/3

Keep Your Action 4/3 Lens Safe Without Sacrificing Image Quality

Your DJI Osmo Action 4/3 goes everywhere with you — on the bike, on the slopes, on the street and at the beach. That also means its exposed front lens is constantly at risk from dust, sand, mud, keys in your bag, or an accidental knock against a rock or railing. A single deep scratch or chip on that front element can permanently affect your image quality and is expensive to repair.

The TELESIN UV Protection Lens Filter adds a dedicated protective layer in front of your Action 4/3 lens, so everyday scuffs and small impacts happen to the filter, not your camera. It’s designed to stay on the camera as a “first line of defense”, so you can shoot with confidence in more challenging environments.

What this UV filter actually does for your footage and your camera

This UV filter blocks unwanted ultraviolet light that can cause a hazy, bluish cast in strong sunlight or at high altitudes. At the same time, its high-transparency optical glass keeps your footage clean, sharp and natural-looking, without adding noticeable color cast or dark corners.

On the protection side, the filter helps keep dust, fingerprints, water droplets and small debris away from the original lens surface. Over time, that means fewer micro-scratches, easier cleaning, and a longer working life for your Action 4/3.

Who This UV Protection Filter Is Ideal For

Everyday vloggers and commuters shooting on the move

If you use your DJI Osmo Action 4/3 as an everyday camera — walking through the city, commuting, grabbing quick vlogs — your lens is constantly exposed. This UV filter is perfect for creators who throw their camera into a bag or pocket and don’t want to baby it every second. It lets you keep the camera ready to shoot, while adding a slim but effective protective layer.

Outdoor, travel and sports creators (hiking, biking, skiing, beach)

For outdoor and action sports shooters, the risks are even higher: flying gravel, powder snow, salt spray, sudden rain, trail dust and accidental knocks. This TELESIN UV filter is made for those situations. It helps guard the lens from scratches and stains when you’re riding downhill, skiing fast, hiking in sand or shooting close to the water.

Creators who want a “leave-it-on” protective layer, not just creative filters

Unlike ND or CPL filters that you swap depending on light and creative needs, a UV protection filter is designed to live on the camera most of the time. This is a great fit for creators who want a simple, always-on solution: mount it once, leave it there, and your Action 4/3 lens stays protected on every shoot.

Optical Performance: Clear, True-to-Life Images

Schott optical glass with uniform refractive index and high transparency

The TELESIN UV Protection Lens Filter uses high-quality Schott optical glass. This glass offers a uniform refractive index and high transparency, which are crucial for keeping your image clean and sharp. Light passes through with minimal loss, so you retain fine detail and contrast in both photo and video.

True color reproduction: no visible color cast, no vignetting

Because the glass is carefully polished and matched to the Action 4/3 lens, your footage keeps its natural colors. You get true color reproduction without an obvious warm or cool tint from the filter. The slim profile is also precisely sized to avoid visible vignetting, even at the Action 4/3’s wide field of view.

Non-reflective multi-layer coating to reduce UV-induced haze and blue tint

A dedicated multi-layer coating on the glass helps reduce reflections and UV-induced haze. In bright sunlight or high-UV environments such as mountains, beaches or snowy fields, this helps cut down on that unwanted blue tint and slight haze in the distance, giving you clearer and more natural-looking shots.

Rugged Construction Designed for Real-World Use

Lightweight aluminum alloy frame: sturdy and durable yet compact

The frame of the filter is made from lightweight aluminum alloy, giving you a sturdy housing that can handle the bumps and knocks of real-world shooting. It offers high strength without adding unnecessary weight or bulk to your setup, so your Action 4/3 remains compact and easy to mount on helmets, handlebars or chest rigs.

Soft silicone contact areas to protect the lens bezel from metal-to-glass contact

Where the filter meets the camera, TELESIN uses soft silicone protection in the contact areas. This helps cushion the connection between the aluminum frame and the lens bezel, reducing the risk of metal-to-glass contact, scratches or pressure marks on the camera body. The result is better protection for both the filter and the camera.

Laser-engraved markings that won’t fade with long-term use

The filter’s markings are laser engraved rather than printed. That means the “UV” and other identifiers on the frame resist fading, peeling or wearing off, even after long-term use, frequent cleaning or exposure to sun and moisture. You can always identify the filter quickly in your kit.

Waterproof, Oil-Resistant and Dust-Proof Nano-Coating

How the nano-coating keeps water droplets and fingerprints off your lens

The front surface of the glass features an added nano-coating layer that helps repel water and oil. Water droplets bead up and are less likely to cling to the surface, which is particularly helpful in light rain, splashes and near water. Fingerprints and skin oils are also less likely to smear across the glass.

Dust, scratch and stain resistance in rough outdoor environments

In dusty and dirty environments, the nano-coating and hard optical glass surface together provide dust and scratch resistance. Small particles are easier to blow or wipe off, and the filter is better able to withstand gentle cleaning and accidental contact compared to the bare camera lens.

Quick cleaning: simple steps to keep the filter surface clear in seconds

When the surface does get dirty, cleaning is straightforward. A quick rinse with clean water and a gentle wipe with a soft microfiber cloth is usually enough to restore clarity. Because of the coating, stains and marks come off more easily, so you spend less time cleaning and more time shooting.

Perfect Fit for DJI Osmo Action 4/3

Compatibility details for DJI Osmo Action 4 and Action 3

This UV filter is specially designed for DJI Osmo Action 4 and DJI Osmo Action 3. The frame shape and dimensions are matched to the lens module of these cameras, so you get a secure fit without wobble or misalignment. There is no need for extra adapters or mounts.

Easy installation and removal in just a few seconds

Installing the filter is quick and intuitive. You simply align it with the lens, mount it according to the Action 4/3’s front ring structure, and make sure it is seated firmly. Removal is just as easy when you need to swap to another filter or clean the camera.

No looseness, no vignetting: what to check after mounting the filter

After mounting, it’s good practice to check that the filter does not move and that there are no dark corners in your test footage. The TELESIN design is made to avoid both looseness and vignetting when used correctly, so once you confirm your fit, you’re ready to shoot.

How to Use This UV Filter in Your Shooting Setup

When to keep the UV filter on your Action 4/3 all day

For most outdoor and daily shooting, you can leave this UV filter on your Action 4/3 all day. It’s especially useful when you’re not sure what conditions you’ll run into — city, trail, seaside or light rain. Whenever your camera is out of the case, having the UV filter in place gives you constant protection.

How a UV filter differs from ND and CPL filters in your kit

A UV filter mainly focuses on protection and mild UV control, and it is usually left on the lens most of the time.
ND filters reduce the amount of light entering the lens so you can use slower shutter speeds or wider apertures in bright conditions.
CPL filters cut reflections and deepen colors in skies and water.

This UV filter does not replace ND or CPL filters – instead, it complements them by protecting your lens in situations where you don’t need creative light control.

Recommended combos with TELESIN ND/CPL filter sets for sunny or high-contrast scenes

For sunny days or very bright, high-contrast scenes, you can pair this UV filter with TELESIN ND or CPL filter sets for DJI Osmo Action 3/4 in your kit. Use the UV filter for general protection and quick grabs, then switch to ND/CPL when you want more control over motion blur, reflections or color in your shots.

Why You Can Trust TELESIN for Action Camera Filters

TELESIN’s experience in designing filters for action cameras and phones

Since 2013, TELESIN has focused on designing and manufacturing accessories for action cameras and smartphones. Over years of working with devices like DJI, GoPro and Insta360, TELESIN has built up practical experience in optical design, filter construction and field testing with real users.

Material choices and lab testing for clarity, durability and fit

For this UV Protection Lens Filter, TELESIN combines Schott optical glass, aluminum alloy frames and silicone protection layers to balance optical quality and mechanical strength. Each batch is tested for transmission, color consistency and fit on DJI Osmo Action 4/3, so that you get a filter that performs well in both the lab and in real-world shooting.

Warranty and after-sales support to protect your purchase

The filter is backed by TELESIN’s product warranty and customer support. If you encounter manufacturing issues or have questions about use and compatibility, TELESIN’s support team is available to help, giving you extra peace of mind when adding this filter to your kit.

Optimized FAQ Section for TELESIN UV Protection Lens Filter for DJI Osmo Action 4/3

Q1: Do I really need a UV filter for my DJI Osmo Action 4/3?
A: A UV filter adds a sacrificial protective layer, reducing the risk of scratches, chips and stains on the original lens in daily and outdoor use.

Q2: Will this UV filter affect image quality or add a color cast?
A: The Schott optical glass and multi-layer coating are designed to keep colors natural and sharp, with no obvious color cast or vignetting in normal use.

Q3: Does this filter fit both DJI Osmo Action 4 and Action 3 securely?
A: Yes, it is specifically designed for DJI Osmo Action 4 and Action 3, providing a snug, stable fit when correctly installed.

Q4: Can I use this filter underwater or while diving?
A: It is water-resistant for splashes, rain and surface use, but for deep diving you should still use a dedicated waterproof housing for your Action 4/3.

Q5: How is this UV filter different from ND or CPL filters?
A: The UV filter mainly protects the lens and cuts UV haze, while ND and CPL filters are for creative control of brightness and reflections.

Q6: Is the filter easy to install and remove? Will it fall off during sports?
A: It installs in seconds and, when properly mounted, stays secure for typical action activities like biking, skiing or hiking.

Q7: How do I clean the nano-coated surface without damaging it?
A: Rinse off dust with clean water, then gently wipe with a soft microfiber cloth; avoid harsh chemicals or rough tissues.

Q8: What materials are used, and is it durable enough for rough use?
A: The filter combines Schott optical glass, an aluminum alloy frame and silicone contact areas to handle daily bumps and frequent cleaning.

Q9: Can I use this filter with cages, frames or other TELESIN accessories?
A: As long as the accessory leaves the lens front unobstructed for Action 4/3, the UV filter can usually be used together; check clearance before use.

Q10: What kind of support or warranty does TELESIN provide for this filter?
A: TELESIN offers product warranty and customer support for manufacturing issues, giving creators added confidence when adding it to their kit.