# TIAN-YA Adjustable Variable ND Filter K&F Concept B-Series Fader ND02-400 — 55 mm

**URL:** https://aio.lv/en/product--tian-ya-kf4326--12371446
**Data updated:** 2026-04-26 20:44 (EEST)
**Category:** Camera Filters
**Manufacturer:** TIAN-YA
**Manufacturer code:** KF4326
**EAN:** 6936069235296
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 27.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 23.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tian-ya-kf4326--12371446

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Variable neutral density (ND) filter TIAN-YA K&F Concept B-Series Fader ND02-400, 55 mm. Provides adjustable light reduction across an ND02–ND400 range for controlling exposure, enabling slower shutter speeds and wider apertures in bright conditions. Ideal for landscape, long-exposure, and motion-blur photography; screws onto 55 mm lens threads.

## Long description

The TIAN-YA Adjustable Variable ND Filter K&F Concept B-Series Fader ND02-400 — 55 mm is a screw-on neutral density filter designed to give photographers continuous control over light transmission. With an adjustable attenuation range equivalent to ND02–ND400, this 55 mm filter lets you reduce incoming light to achieve longer exposures or wider apertures in bright scenes without changing ISO. It is intended for use on lenses with 55 mm front threads and supports creative techniques such as motion blur, smoothing water, and controlling depth of field in daylight.
Advantages
This variable ND filter provides a wide and stepless density range allowing precise exposure control from slight to strong light reduction. Its screw-on 55 mm mount ensures a secure fit to compatible lenses, and the fader design enables quick adjustments without swapping filters. By enabling slower shutter speeds and wider apertures under bright conditions, the filter supports both technical control and creative effects without requiring complex setup changes.
Suitable for
Landscape photography where long exposures are used to smooth water and cloud motion
Long-exposure and motion-blur effects during daytime shooting
Controlling depth of field for portraits or scene composition in bright light
Video capture that requires reduced exposure and shallower depth of field
When it may not be suitable
Variable ND filters can introduce cross-polarization effects, vignetting, or uneven color cast at extreme density settings, especially when stacked with other filters or used on very wide-angle lenses. For the most demanding optical quality or for very high attenuation uniformity, a fixed single-stop ND filter or a high-quality multi-stop filter may be preferable.
Key specifications
Mount diameter: 55 mm screw-on
Density range: adjustable from ND02 to ND400 (stepless variable attenuation)
Function: neutral density (variable) for exposure control and creative long exposures
How to use
Screw the 55 mm filter gently onto the front threads of a compatible lens until it seats securely without overtightening. Rotate the outer ring to adjust the density level and monitor exposure using the camera meter or histogram. Use lower density settings for subtle light reduction and higher settings for long exposures or pronounced motion blur. When composing with wide-angle lenses, check for vignetting and avoid stacking additional filters unless necessary. After use, remove the filter and store it in a protective case to prevent scratches.
What to consider before purchase
Confirm that your lens has a 55 mm front thread to ensure compatibility
Consider whether a variable ND or fixed-stop ND better suits your optical quality needs
Be aware that extreme settings may affect image uniformity or color balance on some lenses
Usage recommendations
For best results, combine moderate density settings with a tripod and low ISO to minimize noise during long exposures. Test the filter at different densities and focal lengths to identify any color shift or vignetting with your lens, and use white balance adjustments in-camera or in post-processing when needed.

## FAQ

### How much does the TIAN-YA Fader ND02-400 Variable ND Filter — 55 mm cost, and is it available for purchase?

The price is 27.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 02.07.2026 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 TIAN-YA 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 TIAN-YA 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/12371446/68490874_large.webp