# Neutral Density Variable Filter K&F 40.5 mm KF Fader ND8–ND2000 adjustable (model SB6572)

**URL:** https://aio.lv/en/product--kf-sb6572--4825128
**Data updated:** 2026-03-20 09:45 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB6572
**EAN:** 6936069281729
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 44.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 37.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb6572--4825128

## 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 40.5 mm KF Fader is an adjustable neutral density (ND) filter offering ND8 to ND2000 light reduction. Designed for 40.5 mm screw-mount lenses, it enables longer exposures and wider apertures in bright conditions. Useful for landscape, long-exposure, and motion-blur photography, the filter provides variable light control without stacking fixed ND filters.

## Long description

The Neutral Density Variable Filter K&F 40.5 mm KF Fader ND8–ND2000 adjustable is a screw-in variable ND designed for lenses with a 40.5 mm filter thread. It provides continuously adjustable light reduction from approximately 3 stops (ND8) up to about 11 stops (ND2000), allowing photographers to extend shutter speeds and open apertures in bright lighting without changing ISO. The compact, low-profile design keeps lens balance and framing intact while enabling effects such as motion blur, smooth water, and selective depth-of-field control.
Advantages
This K&F variable ND filter removes the need to carry multiple fixed-density filters by offering a continuous range of attenuation in a single accessory. Its screw-mount construction ensures secure attachment and alignment with 40.5 mm threaded lenses. The variable range from ND8 to ND2000 gives flexibility for different lighting conditions, from mildly reduced exposure to very long exposures in daylight. The filter maintains image composition and color neutrality when used correctly, and its slim profile reduces the risk of vignetting on wide-angle lenses with compatible frames.
Suitable for
Landscape photography requiring longer exposures to smooth water and clouds
Long-exposure urban and architecture shots in daylight
Creating motion blur for moving subjects such as waterfalls, rivers, or traffic
Using wider apertures in bright light to achieve shallow depth of field
Key specifications
Filter type: Variable neutral density (adjustable ND)
Optical density range: ND8 to ND2000 (approx. 3 to 11 stops of light reduction)
Mount size: 40.5 mm screw thread for compatible lenses
Profile: Slim/low-profile design to minimise vignetting
Construction: Multi-element glass with coated surfaces for transmission and flare control
How to use
Screw the filter gently onto a lens with a 40.5 mm thread until it is secure but not overtightened. Rotate the front element to adjust the density incrementally between ND8 and ND2000 while observing the viewfinder or live view to judge exposure and effect. When composing long-exposure images, use a tripod and mirror lock-up or electronic shutter where available to minimise camera movement. Meter for the desired exposure with the filter in place or calculate exposure changes based on stops of reduction and adjust shutter speed, aperture, or ISO accordingly.
Usage recommendations
To reduce the risk of cross-polarisation or uneven darkening, avoid extreme rotation settings when combining with polarising filters; use the variable ND alone or use fixed ND filters when maximum uniformity is required. Check for vignetting on very wide-angle lenses and keep the filter clean and free of fingerprints to maintain image clarity.

## FAQ

### How much does the Neutral Density Variable Filter K&F 40.5 mm SB6572 cost, and is it available for purchase?

The price is 44.99 € (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 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/4825128/30330873_large.webp