# Adjustable ND Filter K&F Concept KF01.1400 55mm ND2–ND400

**URL:** https://aio.lv/en/product--kf-concept-kf011400--10765167
**Data updated:** 2025-12-30 10:06 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F Concept
**Manufacturer code:** KF01.1400
**EAN:** 6936069236873
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 27.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 22.72 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-concept-kf011400--10765167

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Adjustable neutral density (ND) filter K&F Concept KF01.1400 with 55mm thread, offering variable density from ND2 to ND400. Designed to reduce light entering the lens for longer exposures, motion blur, and wider apertures in bright conditions. Fits lenses with 55mm front thread and is useful for landscape, long‑exposure, and videography applications.

## Long description

Adjustable ND Filter K&F Concept KF01.1400 55mm (ND2–ND400)
The K&F Concept KF01.1400 adjustable neutral density filter reduces the amount of light entering the lens to allow longer exposures, motion blur effects and wider apertures in bright conditions. It fits lenses with a 55 mm front thread and provides a variable density range from ND2 to ND400 for flexible exposure control when shooting landscapes, waterfalls, rivers and other scenes that benefit from slow shutter speeds.
Advantages
The filter uses optical glass and is finished with a double-sided, multi-layer blue coating that improves image quality and provides water resistance. Its slim profile (7.3 mm frame thickness) and super-light CNC ring reduce bulk and help preserve tripod balance. The adjustable density range gives precise control over exposure without changing lenses or stacking fixed ND filters.
Suitable for
Landscape photography
Long exposure shots (water, clouds, light trails)
Creating motion blur and silky water effects
Video work requiring exposure control in bright light
Key specifications
Manufacturer: K&F Concept
Model / MPN: KF01.1400
Thread size: 55 mm
Density range: ND2 to ND400 (variable)
Glass type: Optical glass
Filter frame thickness: 7.3 mm
How to use
Attach the filter to the front thread of a compatible 55 mm lens and rotate the filter ring to adjust the neutral density level between ND2 and ND400. Compose and focus the scene before applying very strong attenuation; for very long exposures use a tripod and remote shutter or camera timer to avoid camera shake. Check exposure with live view or a histogram and make incremental adjustments to the filter rotation until the desired shutter speed or aperture is reached.
Usage recommendations
For best results when photographing moving water or skies, use a sturdy tripod and low ISO. When using the filter at extreme densities, verify focus and white balance before the final exposure and consider using exposure bracketing for safety.

## FAQ

### How much does the K&F Concept KF01.1400 55mm Adjustable ND Filter cost, and is it available for purchase?

The price is 27.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 15 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 09.07.2026 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 Concept 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 Concept 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/10765167/59997718_large.webp