# Neutral Density Variable Filter K&F 49mm Adjustable ND8–ND128 (KF01.1454)

**URL:** https://aio.lv/en/product--kf-sb6621--11878530
**Data updated:** 2026-03-09 20:44 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB6621
**EAN:** 6936069284898
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 55.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 46.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb6621--11878530

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Variable neutral density (ND) filter by K&F with 49mm thread size, adjustable from ND8 to ND128. Designed to reduce light entering the lens for longer exposures, wider apertures in bright conditions, and motion blur control. Suitable for landscape, long-exposure, and video work where precise light attenuation and exposure control are needed.

## Long description

The Neutral Density Variable Filter K&F 49mm Adjustable ND8–ND128 reduces the amount of light entering the lens to allow longer exposures, wider apertures in bright conditions and better control of motion blur. With a 49mm thread size it fits lenses with the same filter thread and provides continuous attenuation from approximately 3 stops (ND8) up to 7 stops (ND128). The filter is intended for photographers and videographers who need flexible exposure control without changing fixed-density filters.
Advantages
The variable ND design offers smooth and continuous light reduction across the ND8–ND128 range, eliminating the need to carry multiple individual neutral density filters. Constructed with multi-coated glass elements, it minimizes reflections and helps retain color fidelity and contrast. The 49mm screw mount ensures compatibility with many compact lenses and lightweight systems, while the slim optical frame reduces vignetting on wide-angle lenses.
Suitable for
Landscape photography requiring long exposures for smooth water and cloud motion
Portraits or outdoor scenes where wider apertures are desired in bright light
Video shooting to maintain consistent shutter settings and cinematic motion blur
Tripod-based long-exposure cityscape and night photography
Key specifications
Filter type: Variable neutral density
Thread size: 49 mm
Light reduction range: approximately ND8 to ND128 (≈3 to 7 stops)
Optical construction: multi-coated glass elements
Frame: slim profile to reduce vignetting on wide-angle lenses
How to use
Screw the filter onto the front filter thread of a lens with a 49mm diameter until it seats securely without overtightening. Rotate the front ring to adjust the density and observe changes in the viewfinder or live view to reach the desired exposure. For long exposures, mount the camera on a tripod and use mirror lockup or electronic shutter where available to reduce vibration. When shooting video, set exposure parameters first and then fine-tune the filter to achieve the target shutter speed and motion rendering.
Usage recommendations
To avoid cross-polarisation or unwanted X-patterns at extreme settings, avoid combining maximum density with very wide-angle lenses; if patterns appear, reduce the rotation slightly or use a single fixed ND filter. Store the filter in a protective case when not in use and clean the glass with a soft microfiber cloth and lens-safe cleaner to maintain optical performance.

## FAQ

### How much does the K&F 49mm Variable ND Filter ND8–ND128 cost, and is it available for purchase?

The price is 55.99 € (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 15.07.2026 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/11878530/67296002_large.webp