# K&F 4-in-1 Filter Kit for 77mm — UV Nano-K + CPL Polarizer + Lens Cap + Case

**URL:** https://aio.lv/en/product--kf-sb7929--11878754
**Data updated:** 2026-03-09 20:44 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB7929
**EAN:** 5904647817746
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 36.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 30.16 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb7929--11878754

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

4-in-1 K&F filter kit for 77 mm lenses including a UV Nano-K filter, circular polarizing (CPL) filter, lens cap and protective case. The UV Nano-K reduces ultraviolet haze and protects the front element; the CPL controls reflections and increases color saturation. Compact kit for landscape, travel and outdoor photography and everyday lens protection.

## Long description

The K&F 4-in-1 Filter Kit for 77mm combines a UV Nano-K filter, a circular polarizing (CPL) filter, a snap-on lens cap and a protective case in one compact set. Designed for lenses with a 77 mm filter thread, this kit provides basic optical protection and creative control over reflections and atmospheric haze. The UV Nano-K element reduces ultraviolet light and airborne haze while acting as a protective barrier for the front element; the CPL helps manage reflections from non-metallic surfaces and increases color saturation and contrast in outdoor scenes.
Advantages
The kit offers multifunctional value by pairing lens protection with image-enhancing filters in a single package. The UV Nano-K provides a thin, low-profile layer to limit UV-induced softening and to shield the front glass from dust and minor impacts. The circular polarizer rotates to selectively reduce glare and deepen skies without affecting exposure metering. A lightweight snap-on lens cap ensures quick protection between shots, and the included case keeps filters and accessories organized and safe during transport.
Suitable for
 Landscape photography where haze reduction and enhanced sky contrast are required
 Travel and outdoor shooting to protect the front element and control reflections
 Everyday lens protection during storage and transport
 Architectural and product photography when reducing window and surface reflections is necessary
Key specifications
 Filter thread size: 77 mm
 Filter types included: UV Nano-K and circular polarizer (CPL)
 Construction: slim-profile UV filter and rotating CPL mount
 Accessories: snap-on lens cap and protective storage case
 Primary functions: ultraviolet reduction, reflection control, color saturation and front element protection
How to use
Screw the UV Nano-K filter onto the lens thread as the first layer to provide permanent front-element protection and reduce ultraviolet haze. Mount the CPL filter on top of the UV filter or directly on the lens if preferred; rotate the CPL outer ring while observing the viewfinder or live view until the desired reduction in reflections and increase in color saturation is achieved. Use the snap-on lens cap to protect the filter surface when the camera is not in use, and store both filters and accessories in the supplied case when transporting the kit.
Usage recommendations
For best results when shooting landscapes and skies, compose with polarization in mind: rotate the CPL until sky tones and foliage saturation reach the level you want, and avoid extreme rotation that can cause uneven polarization across wide-angle frames. Keep the UV Nano-K on the lens for continuous protection; clean filters with a microfiber cloth and appropriate lens cleaning solution to maintain optical performance.

## FAQ

### How much does the K&F 4-in-1 Filter Kit for 77mm cost, and is it available for purchase?

The price is 36.49 € (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 14.07.2026 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/11878754/67296304_large.webp