# Neutral Density Adjustable Filter K&F 40.5 mm with Fader ND8–ND128 (KF01.1444)

**URL:** https://aio.lv/en/product--kf-sb7454--11878437
**Data updated:** 2026-03-09 20:43 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB7454
**EAN:** 5904647814516
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 56.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 46.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb7454--11878437

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Adjustable neutral density (ND) filter by K&F in 40.5 mm thread size, featuring a fader design that continuously varies light reduction between ND8 and ND128. Designed for controlling exposure and motion blur in photography and videography, it suits daylight long exposures, wider apertures in bright conditions, and smooth video shutter control. Fits lenses with 40.5 mm filter thread and is identified by model KF01.1444 (MPN SB7454, EAN 5904647814516).

## Long description

The Neutral Density Adjustable Filter K&F 40.5 mm with Fader ND8–ND128 provides variable light attenuation for lenses with a 40.5 mm filter thread. This fader-style ND filter continuously adjusts light reduction from approximately 3 stops (ND8) up to 7 stops (ND128), enabling precise control of exposure and motion blur without changing filters. It is intended for use in bright conditions where extended shutter speeds, wider apertures, or smoother video shutter control are required.
Advantages
The fader design offers continuous adjustment between ND8 and ND128, allowing gradual changes in light reduction without interrupting a shoot. Its 40.5 mm sizing ensures compatibility with lenses that use this standard thread, and the circular screw-in format keeps the front profile compact and easy to mount. By reducing the need to swap filters, the adjustable ND improves workflow efficiency for photographers and videographers working outdoors.
Suitable for
Daylight long exposure photography of landscapes, waterfalls, and seascapes
Portraits or scenes requiring wider apertures in bright light
Handheld or tripod-based video to control shutter exposure and achieve cinematic motion
On-location shoots where quick, fine-tuned exposure adjustments are needed
Key specifications
Filter type: Variable neutral density (fader) filter
Light reduction range: ND8 to ND128 (approx. 3 to 7 stops)
Mount: 40.5 mm screw-in (circular)
Control: Continuous rotation fader for smooth adjustment
Primary use: Exposure and motion blur control for photo and video
How to use
Screw the filter onto the lens front thread until it seats securely without cross-threading. Rotate the outer ring to adjust the density gradually from ND8 to ND128 while monitoring the exposure in the viewfinder or on the camera display. For long exposures, use a tripod to prevent camera shake and set the camera to manual or shutter-priority mode to lock in desired shutter speed. For video, adjust the fader while checking shutter angle or shutter speed to maintain consistent motion rendition. If you notice vignetting at wide focal lengths, confirm the filter is correctly seated and consider stopping down or using a wider-angle-specific solution.
Usage recommendations
Test the full adjustment range before critical shoots to identify any color cast or desired exposure limits. Use light metering or histograms to confirm results and re-check focus after heavy density settings. Store the filter in its protective case when not in use to avoid scratches and dust on the glass surfaces.

## FAQ

### How much does the K&F Adjustable ND Filter 40.5 mm ND8–ND128 cost, and is it available for purchase?

The price is 56.49 € (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 16.07.2026 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/11878437/67295886_large.webp