# Neutral Density Variable Filter K&F Concept 55 mm ND2–ND2000 (Variable ND, adjustable, gray)

**URL:** https://aio.lv/en/product--kf-sb8237--12110253
**Data updated:** 2026-03-20 10:01 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB8237
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb8237--12110253

## 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

Variable neutral density (ND) filter by K&F Concept for 55 mm filter thread. Adjustable density from approximately ND2 to ND2000, allowing control of light entering the lens for longer exposures, motion blur effects, and wider apertures in bright conditions. Gray (neutral) design for minimal color shift; suitable for landscape, long exposure, and videography use.

## Long description

The Neutral Density Variable Filter K&F Concept 55 mm ND2–ND2000 is an adjustable gray (neutral) filter designed for lenses with a 55 mm filter thread. It provides a continuously variable light reduction ranging approximately from ND2 to ND2000, enabling precise control of exposure time and depth of field without changing aperture or ISO. The neutral gray construction aims to minimise color cast, making this variable ND suitable for landscape photography, long exposures, and video work where controlled light reduction and natural color reproduction are important.
Advantages
This variable ND filter offers a wide adjustable range for fine control over light attenuation, allowing both subtle and very strong reductions in exposure. The screw-in 55 mm mount makes attachment straightforward on compatible lenses, while the neutral gray design reduces the likelihood of noticeable colour shifts. The single compact filter replaces multiple fixed-density filters, reducing kit weight and increasing versatility in changing light conditions.
Suitable for
 Landscape photography with long exposures to smooth water and clouds
 Portrait or outdoor shooting to use wider apertures in bright light
 Videography to control shutter exposure for consistent motion rendering
 Street and travel photography where quick exposure adjustment is needed
Key specifications
 Filter type: Variable neutral density (variable ND)
 Filter thread size: 55 mm
 Density range: approximately ND2 to ND2000 (continuous adjustment)
 Optical colour: neutral gray for minimal colour shift
 Mount style: screw-in metal ring compatible with 55 mm threaded lenses
 Primary use: exposure control for stills and video, long exposures
How to use
Screw the filter onto a lens with a 55 mm filter thread until secure, taking care not to cross-thread. Rotate the outer ring to adjust the density gradually; observe the light meter or histogram and adjust exposure settings (shutter speed, aperture, ISO) as needed for the intended effect. For long-exposure landscape shots, set a small aperture and low ISO, then rotate the filter to reach the desired shutter speed. For video, adjust the ND to maintain correct exposure while keeping the preferred shutter angle or shutter speed.
Usage recommendations
Use live view or a test exposure to verify colour neutrality and avoid unwanted vignetting at wide-angle settings. When working at extreme densities, check for potential cross-polarisation or X-pattern (common with some variable NDs) and compensate by changing composition, reducing stacked filters, or switching to a fixed ND if necessary.

## FAQ

### How much does the K&F Concept 55 mm Variable ND2–ND2000 Filter cost, and is it available for purchase?

The price is 29.49 € (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/12110253/67646146_large.webp