# K&F 37mm 4-in-1 Filter Kit — Nano-K UV, CPL, ND4, Protective (37 mm)

**URL:** https://aio.lv/en/product--kf-sb7483--11878609
**Data updated:** 2026-03-09 20:44 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB7483
**EAN:** 5904647814820
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 31.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb7483--11878609

## 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

K&F 37mm 4-in-1 filter kit includes Nano-K UV, circular polarizer (CPL), ND4 neutral density and a protective filter for lenses with 37 mm thread. Designed for basic lens protection, glare and reflection control, and light reduction for longer exposures or wider apertures. Suitable for compact lenses and mirrorless or DSLR setups using 37 mm filters.

## Long description

The K&F 37mm 4-in-1 Filter Kit includes a Nano-K UV, a circular polarizer (CPL), an ND4 neutral density filter and a protective filter, all sized for lenses with a 37 mm thread. This compact set is designed to provide basic optical protection, reduce ultraviolet haze, control reflections on non-metallic surfaces and decrease light transmission when longer exposures or wider apertures are required. The filters are lightweight and suitable for small prime lenses, compact zooms and many mirrorless or DSLR setups that accept 37 mm screw-in filters.
Advantages
The Nano-K UV filter blocks ultraviolet light and helps maintain color fidelity while offering surface protection for the front element. The circular polarizer reduces glare and improves contrast in skies, water and reflective surfaces without affecting autofocus performance. The ND4 neutral density filter reduces incoming light by two stops to enable slower shutter speeds or wider apertures under brighter conditions. The protective filter serves as a physical barrier against dust, moisture and minor contact damage. The set’s uniform 37 mm size simplifies swapping filters and keeps weight and bulk to a minimum.
Suitable for
Everyday lens protection for compact lenses and adapters with 37 mm threads
Landscape photography to deepen skies and cut reflections using the CPL
Portraits and low-light shooting when ND4 allows wider apertures or controlled depth of field
Travel and street photography where compact, lightweight accessories are required
Key specifications
Filter thread size: 37 mm
Filter types included: Nano-K UV, circular polarizer (CPL), ND4 neutral density, protective clear filter
ND strength: 2 stops (ND4)
Construction: multi-coated glass elements with metal or alloy slim ring (design varies by model)
Compatibility: lenses with 37 mm screw-in filter mount
How to use
Screw the appropriate filter onto the front of a compatible 37 mm lens until it sits snugly; avoid overtightening. Use the UV filter or protective clear filter as a permanent guard against dust and scratches. Rotate the circular polarizer while observing the effect through the viewfinder or on the camera screen to achieve the desired reduction in reflections and increased color saturation. Attach the ND4 when you need to reduce light by two stops to lengthen exposure times or allow a wider aperture in bright conditions. Remove or change filters as shooting situations require, and store them in their protective case to prevent scratches when not in use.
Usage recommendations
Keep filter threads and lens threads clean and free of grit before mounting to avoid cross-threading. When using the CPL, compose and check polarization effect at the shooting distance and angle to the light source; the strongest effect is typically at 90 degrees to the sun. For long exposures with ND4, use a stable tripod and mirror lock-up or electronic shutter if available to minimize camera shake. Clean filters with a soft microfiber cloth and appropriate lens solution; avoid abrasive materials.

## FAQ

### How much does the K&F 37mm 4-in-1 Filter Kit cost, and is it available for purchase?

The price is 38.49 € (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/11878609/67296122_large.webp