# Neutral Density (ND) Variable Filter K&F 77mm Fader ND8–ND2000 model SB6581

**URL:** https://aio.lv/en/product--kf-sb6581--4825133
**Data updated:** 2026-03-07 15:00 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB6581
**EAN:** 6936069281804
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 57.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 47.51 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb6581--4825133

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

Variable neutral density (ND) filter K&F for 77 mm lens threads, model SB6581. Adjustable density range ND8 to ND2000 provides control over light transmission for longer exposures and wider apertures in bright conditions. Designed for landscape, long-exposure, and motion-blur photography, the filter reduces incoming light without altering color balance and mounts directly onto compatible lenses.

## Long description

Neutral Density (ND) Variable Filter K&F 77mm Fader ND8–ND2000 model SB6581 is a variable ND filter designed for lenses with 77 mm front threads. The filter provides adjustable light reduction from approximately 3 stops (ND8) to about 11 stops (ND2000), enabling longer exposures and wider aperture usage in bright light without changing the scene's color balance. The screw-in design mounts directly to compatible lenses and is intended for landscape, long-exposure, and motion-blur photography.
Advantages
The variable density range allows gradual control of exposure without swapping multiple fixed ND filters, and the filter’s neutral transmission minimizes color cast. Its threaded mounting ensures a secure attachment to 77 mm lenses, while the adjustable mechanism offers precise control over light reduction for both stills and video. The filter preserves image sharpness and enables creative effects such as motion blur and slower shutter speeds in bright conditions.
Suitable for
 Landscape photography requiring long exposures
 Long-exposure seascapes and waterfalls
 Motion blur effects for vehicles, crowds, or flowing water
 Video shooting in bright conditions where controlled exposure is needed
Key specifications
 Filter type: Variable neutral density (ND)
 Mount thread size: 77 mm
 Density range: ND8 to ND2000 (approx. 3 to 11 stops)
 Optical effect: Adjustable light transmission with neutral color balance
 Construction: Screw-in circular filter, multi-element glass coating to reduce reflections
How to use
Attach the filter by screwing it onto the 77 mm front threads of a compatible lens until secure. Rotate the outer ring to adjust the density gradually, observing the exposure through the viewfinder or live view; for longer shutter speeds, increase density until the desired exposure is reached. When using the filter at extreme densities, check for potential vignetting on wide-angle lenses and adjust composition or use a thinner filter if necessary. For video, set exposure parameters first and fine-tune density to maintain consistent shutter speed and aperture.
Usage recommendations
Use the filter with a tripod for long-exposure shots to avoid camera shake. Monitor white balance if precise color reproduction is critical and bracket exposures when testing new density settings. Store the filter in a protective case when not in use to avoid scratches and dust on the optical surfaces.

## FAQ

### How much does the K&F 77mm Variable ND Filter SB6581 cost, and is it available for purchase?

The price is 57.49 € (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 30.06.2026 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/4825133/30330888_large.webp