# Diffusion Filter / Diffuser K&F HD Black Diffusion 1/4 to 55mm adapter

**URL:** https://aio.lv/en/product--kf-sb10878--11878689
**Data updated:** 2026-03-09 20:44 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB10878
**EAN:** 6936069271027
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 50.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 42.14 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb10878--11878689

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

K&F HD Black Diffusion filter with 1/4 strength provides softening of highlights and gentle diffusion for photography and videography. Designed for use with 55 mm lens thread via included 1/4 to 55 mm adapter, it reduces contrast and smooths skin tones while preserving overall image detail. Suitable for portrait, cinematography, and creative effects.

## Long description

The K&F HD Black Diffusion filter with 1/4 strength is an optical accessory that softens highlights and creates a gentle diffusion effect while maintaining overall image detail. Supplied with a 1/4 to 55 mm adapter, this diffuser is intended for use on lenses with a 55 mm filter thread and is suitable for both still photography and video production. The filter reduces local contrast, subtly smooths skin textures and halation around bright areas, and preserves color fidelity for natural-looking results.
Advantages
This diffusion filter delivers controlled softening without significantly degrading sharpness across the frame. The 1/4 strength setting provides mild diffusion ideal for reducing specular highlights and slight contrast while keeping fine detail visible. The included 1/4 to 55 mm adapter makes it compatible with lenses that have a 55 mm thread, enabling quick attachment and reliable alignment. The neutral color balance ensures minimal color cast so skin tones and overall color rendition remain accurate.
Suitable for
 Portrait photography to soften skin and reduce blemish emphasis
 Cinematography and video work for controlled bloom and smoother highlights
 Creative stills where a mild dreamy or vintage look is desired
 On-location shoots where lens thread compatibility and quick mounting are needed
Key specifications
 Diffusion strength: 1/4 (mild)
 Optical effect: softening of highlights and reduction of local contrast
 Color neutrality: minimal color cast to preserve accurate skin tones
 Mount compatibility: designed for 55 mm lens thread via included adapter
 Intended use: compatible with still photography and video/cinematography
How to use
Screw the provided 1/4 to 55 mm adapter into the lens filter thread if your lens has a 55 mm thread, then attach the diffusion filter to the adapter until secure. Compose and meter as usual; the filter reduces contrast and softens highlights, so exposure settings typically remain unchanged but check highlights in critical scenes. For portrait work, position the subject and adjust distance and lighting to control how much diffusion appears on skin texture and highlights. In video, confirm focus and sharpness on monitor or viewfinder, then fine-tune aperture and lighting to balance the diffusion effect with desired depth of field.
Usage recommendations
Use the filter when you need mild highlight bloom and smoother skin rendering without heavy loss of detail. Combine with controlled lighting to avoid excessive flare; clean the glass and adapter threads before mounting to prevent dust or alignment issues. Test the filter at relevant apertures and distances to determine the optimal balance between diffusion and retained detail for your project.

## FAQ

### How much does the K&F HD Black Diffusion 1/4 to 55mm filter cost, and is it available for purchase?

The price is 50.99 € (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 15.07.2026 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/11878689/67296216_large.webp