# Circular Polarizing (CPL) Camera Filter K&F CONCEPT NANO-X Ultra-Low Reflection 40.5mm

**URL:** https://aio.lv/en/product--kf-sb8640--11878494
**Data updated:** 2026-03-09 20:44 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB8640
**EAN:** 6942052515764
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.49 €
**Prices and availability valid until:** 2026-08-24 23:59
**Price without VAT (21%):** 29.33 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb8640--11878494

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.79 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

Circular polarizing (CPL) camera filter K&F CONCEPT NANO-X with 40.5mm diameter, designed to reduce reflections and enhance color saturation by filtering polarized light. The Ultra-Low Reflection coating minimizes internal reflections and glare for clearer images. Suitable for landscape, outdoor and product photography where controlling reflections and improving contrast are needed.

## Long description

The Circular Polarizing (CPL) Camera Filter K&F CONCEPT NANO-X Ultra-Low Reflection 40.5mm is a slim optical accessory designed to reduce reflections from non-metallic surfaces and to enhance color saturation and contrast. Built for lenses with a 40.5mm front thread, this CPL filter selectively blocks polarized light to diminish glare from water, glass, and foliage, producing clearer and more evenly exposed images in outdoor and controlled-light environments. The Nano-X Ultra-Low Reflection coating reduces internal reflections and flare, improving image clarity during bright or backlit conditions.
Advantages
The filter reduces unwanted surface reflections and improves color saturation without altering exposure significantly, allowing more vivid skies and richer greens in landscape photography. Its Ultra-Low Reflection coating minimizes internal flare and ghosting, yielding cleaner results when shooting towards strong light sources. The slim profile helps prevent vignetting on wide-angle lenses while maintaining easy manual rotation for precise polarization control.
Suitable for
 Landscape photography to deepen sky contrast and reduce haze
 Outdoor and nature photography to remove reflections from water and leaves
 Product and still-life photography to control glass and glossy surface reflections
 Architecture and street photography where managing window and facade glare is needed
Key specifications
 Filter type: Circular polarizer (CPL)
 Thread diameter: 40.5 mm
 Coating: Ultra-Low Reflection Nano coating to reduce internal reflections and flare
 Frame: Slim profile metal mount to reduce vignetting on wide-angle lenses
 Optical effect: Reduces polarized light to control glare and increase color saturation and contrast
How to use
Attach the CPL filter to the lens front thread and rotate the filter element while observing the viewfinder or live view until the desired reduction of reflections and improvement in contrast is achieved. Adjust rotation gradually to fine-tune polarization strength; full rotation changes the degree of effect. Use with manual or autofocus lenses as usual. When using in bright sunlight, check for potential exposure changes and compensate with camera settings if necessary.
Usage recommendations
For best results, use the CPL filter at 90 degrees to the sun for maximum polarization effect. Keep the filter clean and store it in a protective case to preserve the Nano-X coating. Avoid stacking multiple thick filters on wide-angle lenses to prevent vignetting; consider using the slim-profile mount when working with shorter focal lengths.

## FAQ

### How much does the CPL Camera Filter K&F CONCEPT NANO-X 40.5mm cost, and is it available for purchase?

The price is 35.49 € (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 10.08.2026 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/11878494/67295958_large.webp