# Camera Filter K&F Concept Nano-X CPL + Fader ND02-32 + Black Mist 1/4 — 37 mm

**URL:** https://aio.lv/en/product--kf-kf5225--12389899
**Data updated:** 2026-04-26 21:02 (EEST)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** KF5225
**EAN:** 6942052550550
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 71.99 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 59.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-kf5225--12389899

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

Combined lens filter set from K&F Concept Nano-X for 37 mm threads including a circular polarizer (CPL), an adjustable fader ND ranging ND02–32 and a Black Mist 1/4 diffusion filter. Designed to reduce reflections and glare, control exposure across a variable ND range, and soften highlights for cinematic look. Suited for landscape, outdoor and video shooting on lenses with 37 mm filter mount.

## Long description

The Camera Filter K&F Concept Nano-X CPL + Fader ND02-32 + Black Mist 1/4 — 37 mm is a three-piece filter set for lenses with a 37 mm thread. The set includes a circular polarizer (CPL) to reduce reflections and increase colour saturation, an adjustable fader neutral density (ND) filter with a variable range from ND02 to ND32 to control exposure and motion blur, and a Black Mist 1/4 diffusion filter that softens highlights and reduces contrast for a film-like appearance. These filters feature multi-resistant coatings and slim metal frames designed for compact lenses and minimal vignetting on wide-angle optics.
Advantages
The CPL filter improves colour rendition and reduces glare from non-metallic surfaces without affecting exposure, while the fader ND enables fine exposure control across a wide stop range without changing filters. The Black Mist 1/4 filter moderates specular highlights and creates a subtle diffusion that preserves image detail. Together, the three filters provide a compact, versatile solution for stills and video workflows where reflection control, adjustable light reduction and highlight smoothing are required.
Suitable for
Landscape and outdoor photography to reduce sky reflections and deepen colour.
Video and cinematic shooting where variable ND is needed to maintain shutter settings while adjusting aperture or ISO.
Portraits and creative work when a mild diffusion effect is desired to soften highlights.
Compact systems and small prime lenses with 37 mm filter threads.
When it may not be suitable
This 37 mm set is intended for lenses with that specific thread size; it will not mount directly on lenses with different thread diameters without step-up or step-down rings. The Black Mist 1/4 effect is subtle by design and may be insufficient for users seeking strong glow or heavy diffusion. The slim frames reduce vignetting but very wide-angle lenses or stacked filter combinations can still show edge darkening or mechanical vignetting.
Key specifications
Filter thread diameter: 37 mm.
Included filters: circular polarizer (CPL), adjustable fader ND (ND02–ND32), Black Mist 1/4 diffusion.
ND range: approximately 1 to 5 stops (ND02–ND32 adjustable range).
Optical glass with multi-resistant coatings to reduce reflections and improve durability.
Slim metal filter frames to minimise vignetting on wide-angle lenses.
How to use
Screw the desired filter onto a lens with a 37 mm thread and rotate the CPL element while observing the viewfinder or live view to achieve the required polarization effect. For exposure control, rotate the outer ring of the fader ND to set the ND strength between ND02 and ND32; monitor histogram or exposure indicators as you adjust. Attach the Black Mist 1/4 when you want to soften highlights and lower contrast — it can be used alone or in combination with the CPL or fader ND. Avoid overtightening filter rings and check for vignetting after stacking multiple filters.
What to consider before purchase
Confirm your lens has a 37 mm filter thread or plan to use step rings for different diameters.
Decide whether a subtle Black Mist 1/4 effect meets your creative needs versus stronger diffusion filters.
Consider the limitations of stacking filters on very wide-angle lenses due to potential vignetting.
Usage recommendations
For outdoor and landscape work, combine the CPL and the fader ND to control reflections and exposure while maintaining low ISO and desired shutter speed. Use the Black Mist 1/4 selectively on highlights or portrait catchlights to achieve a softer, cinematic look without heavy loss of detail.

## FAQ

### How much does the K&F Concept Nano-X 37 mm CPL + Fader ND02-32 + Black Mist cost, and is it available for purchase?

The price is 71.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 17.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can K&F Concept Nano-X 37 mm CPL + Fader ND02-32 + Black Mist be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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/12389899/68532068_large.webp