# Circular Polarizer (CPL) Ultra HD 8K Nano-X filter for DJI Osmo Action 4 by K&F Concept (model SB8341)

**URL:** https://aio.lv/en/product--kf-sb8341--11848886
**Data updated:** 2026-03-09 17:24 (EET)
**Category:** Action Camera Accessories
**Manufacturer:** K&F
**Manufacturer code:** SB8341
**EAN:** 5904647818941
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 20.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb8341--11848886

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

K&F Concept circular polarizing (CPL) filter SB8341 designed for DJI Osmo Action 4. The Ultra HD 8K Nano-X coated CPL reduces reflections and glare, improves color saturation and contrast, and helps control sky highlights when shooting action and outdoor footage. Suitable for landscape, water and glass reflections, and general outdoor action camera use.

## Long description

The Circular Polarizer (CPL) Ultra HD 8K Nano-X filter for DJI Osmo Action 4 by K&F Concept (model SB8341) is a dedicated screw-on polarizing filter engineered for action camera use. Designed to fit the Osmo Action 4, this CPL reduces surface reflections and glare, enhances color saturation and contrast, and helps control bright sky highlights when filming outdoors. The Ultra HD 8K Nano-X coating improves light transmission and resists water and finger marks to maintain consistent image quality during active shooting.
Advantages
This CPL filter lowers unwanted reflections from water, glass and wet surfaces while preserving natural color balance. By improving contrast and saturation it helps produce clearer skies and richer foliage tones without digital post-processing. The Nano-X coating enhances durability and makes the filter easier to clean, which is useful in outdoor and action environments. The filter is optimized for the optics of the DJI Osmo Action 4 to minimize vignetting and loss of sharpness at wide angles.
Suitable for
 Landscape and nature videography with DJI Osmo Action 4
 Shooting over water or wet surfaces to reduce reflections
 Outdoor sports and action footage where glare control is needed
 Cityscapes and architecture involving glass and reflective facades
Key specifications
 Filter type: Circular polarizer (CPL)
 Optical coating: Ultra HD 8K Nano-X multi-coating for improved transmission and smudge resistance
 Compatibility: Designed to fit DJI Osmo Action 4 lens mount and optics
 Effect: Reduces reflections and glare, increases color saturation and contrast
 Optical impact: Minimized vignetting and maintained sharpness for wide-angle action camera use
How to use
Attach the circular polarizer to the lens area of the DJI Osmo Action 4 according to the camera and filter alignment method specified for the accessory. Rotate the outer ring of the filter while monitoring the viewfinder or live screen until the desired reduction in reflections and increase in color saturation is achieved. For best results, adjust the filter angle relative to the sun and reflective surfaces; the strongest polarization effect typically occurs when the sun is at approximately 90 degrees to the lens direction. Clean the filter surface gently before shooting to remove fingerprints or droplets.
Usage recommendations
Use the CPL when filming scenes with visible reflections, bright skies or washed-out colors. When recording in low light or when using automatic exposure, be aware that the polarizer can reduce incoming light and may require exposure compensation or a higher ISO setting. Store the filter in a protective case when not in use to preserve the Nano-X coating and optical performance.

## FAQ

### How much does the K&F CPL Ultra HD 8K Nano-X filter for DJI Osmo Action 4 cost, and is it available for purchase?

The price is 24.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All K&F products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized K&F service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11848886/67247587_large.webp