# Circular Polarizing Filter CPL K&F CONCEPT NANO-X Ultra-Low Reflection 37 mm

**URL:** https://aio.lv/en/product--kf-sb8639--11878908
**Data updated:** 2026-03-09 20:44 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB8639
**EAN:** 6942052515757
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.99 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 29.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb8639--11878908

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Circular polarizing (CPL) camera filter K&F CONCEPT NANO-X with 37 mm thread size. Features ultra-low reflection coating designed to reduce glare and enhance color saturation and contrast for outdoor, landscape, and product photography. Screw-mount design for compatible lenses with 37 mm filter thread; useful for reducing reflections from non-metallic surfaces and improving sky color.

## Long description

The Circular Polarizing Filter CPL K&F CONCEPT NANO-X Ultra-Low Reflection 37 mm is a screw-in camera filter designed for lenses with a 37 mm thread. It applies polarization to reduce unwanted reflections from non-metallic surfaces such as water and glass, while enhancing color saturation and contrast. The nano multi-coating minimizes internal reflections and ghosting, helping to preserve image clarity when working outdoors or in bright conditions.
Advantages
This CPL filter improves sky rendering and color saturation without affecting exposure settings significantly. The ultra-low reflection coating reduces flare and ghosting for cleaner images, and the slim metal frame helps avoid vignetting on wide-angle lenses that accept 37 mm filters. The screw-mount provides stable attachment and easy rotation to adjust the polarization effect.
Suitable for
 Landscape photography to deepen blue skies and increase contrast
 Outdoor product and still-life photography to reduce surface reflections
 Water and glass shooting to cut glare and reveal details beneath reflective surfaces
 Travel and street photography when controlling reflections and boosting color
Key specifications
 Filter type: Circular polarizer (CPL)
 Mount: Screw-in threaded mount for 37 mm lenses
 Coating: Nano ultra-low reflection multi-coating to reduce flare and ghosting
 Frame: Slim metal ring to minimize vignetting on wide-angle lenses
 Optical effect: Reduces reflections from non-metallic surfaces and increases color saturation and contrast
How to use
Attach the CPL filter by screwing it onto a lens with a 37 mm filter thread until secure. Rotate the outer ring while viewing the scene through the viewfinder or on the camera screen to set the desired level of polarization; maximum effect is typically achieved at a 90-degree angle to the sun. Use live view or test shots to check exposure and framing, as the filter can slightly affect light transmission and may require minor exposure compensation.
Usage recommendations
For best results, clean the filter surfaces before shooting and avoid stacking thick filters that may introduce vignetting. When shooting wide-angle scenes, verify that the slim frame prevents darkening at the corners. Store the filter in a protective case when not in use to keep the nano coating free of dust and scratches.

## FAQ

### How much does the Polarizing Filter K&F CONCEPT NANO-X CPL 37 mm cost, and is it available for purchase?

The price is 35.99 € (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 13.07.2026 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/11878908/67296553_large.webp