# Circular Polarizing Filter K&F Nano-C HMC CPL 77 mm

**URL:** https://aio.lv/en/product--kf-kf3988--11879155
**Data updated:** 2026-03-09 20:45 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** KF3988
**EAN:** 6942052520522
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.49 €
**Prices and availability valid until:** 2026-08-24 23:59
**Price without VAT (21%):** 20.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-kf3988--11879155

## 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) filter by K&F, model Nano-C HMC in 77 mm thread size. Designed to reduce reflections and glare, increase color saturation and contrast, and improve sky rendering in outdoor photography. Fits lenses with 77 mm front threads and is suitable for landscape, travel, architectural and product photography to control reflections and enhance color fidelity.

## Long description

The Circular Polarizing Filter K&F Nano-C HMC CPL 77 mm is an optical filter designed for photographers who need reliable control over reflections, glare and atmospheric haze. It screws onto lenses with a 77 mm front thread and works by selectively reducing polarized light, which enhances color saturation, improves sky rendering and increases apparent contrast in outdoor scenes. The filter uses a multi-coated design to maintain light transmission and minimize internal reflections, making it suitable for landscape, travel, architectural and product photography where accurate color and reduced surface reflections are required.
Advantages
The CPL filter reduces unwanted reflections from non-metallic surfaces such as water, glass and foliage while preserving natural color fidelity. Its circular polarizer design is compatible with modern autofocus and exposure metering systems, and the multi-coating helps prevent ghosting and flare under challenging lighting conditions. The 77 mm threaded mount provides a secure connection to compatible lenses, and the slim profile minimizes vignetting on wide-angle optics.
Suitable for
Landscape photography to enhance skies and reduce atmospheric haze
Travel photography for controlling reflections on windows and water
Architectural and interior photography to suppress glass reflections
Product photography to reduce glare and improve color rendering
Key specifications
Filter type: circular polarizer (CPL)
Thread size: 77 mm
Optical construction: polarizing element with multi-coated glass
Mount: screw-in metal frame with rotatable outer ring
Compatibility: suitable for lenses with 77 mm front threads and cameras with autofocus and exposure metering
How to use
Attach the filter by screwing it onto the lens front thread until it is secure but not overtightened. Rotate the outer ring while observing the viewfinder or live view to adjust the degree of polarization; maximum effect is achieved at a 90-degree angle to the sun. Check exposure and autofocus performance after mounting; the circular polarizer is designed to maintain compatibility with automatic camera functions. When not in use, store the filter in its protective case to avoid scratches and dust.
Usage recommendations
For best results, combine the CPL filter with a tripod for consistent framing during long exposures and use viewfinder or LCD preview to dial in the desired polarization effect. Avoid stacking too many filters to prevent vignetting on wide-angle lenses, and clean the glass with a microfibre cloth and appropriate lens cleaner to preserve coatings and image quality.

## FAQ

### How much does the K&F Nano-C HMC CPL circular polarizer 77 mm 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 — 30 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/11879155/67296987_large.webp