# Filter kit K&F Concept SB7879 — Black Diffusion 1/4 and 1/8 for 55mm lenses

**URL:** https://aio.lv/en/product--kf-sb7879--11374401
**Data updated:** 2026-03-07 20:00 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB7879
**EAN:** 5904647817340
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.49 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 29.33 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb7879--11374401

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

K&F Concept filter kit SB7879 includes two Black Diffusion filters in strengths 1/4 and 1/8 sized for 55 mm filter threads. Designed for stills and video, these diffusion filters soften highlights, reduce contrast and create gentle halation for skin tones and highlights. Mounts on lenses with 55 mm thread to control bloom and achieve a cinematic, softened look without digital processing.

## Long description

K&F Concept SB7879 Black Diffusion kit contains two screw‑in diffusion filters sized for 55 mm lens threads, available in strengths 1/4 and 1/8. These optical filters are intended for still photography and video capture to slightly soften highlights, reduce mid‑tone contrast and produce delicate halation around bright areas. The filters mount directly to lenses with a 55 mm thread and provide an in‑camera way to control bloom and create a more cinematic, softened look for skin tones and specular highlights without relying on digital post‑processing.
Advantages
The Black Diffusion glass surface scatters light in a controlled way to preserve overall sharpness while smoothing contrast and reducing micro‑detail in highlights. Including two densities (1/4 and 1/8) gives the photographer or videographer the flexibility to choose subtle or very subtle diffusion depending on subject, lighting and desired aesthetic. The screw‑in 55 mm mounting is compact and compatible with any lens that accepts 55 mm filters, allowing quick attachment and removal during shoots.
Suitable for
 Shooting portraits where softer skin rendering and gentle highlight bloom are desired
 Video production that requires a cinematic, organic diffusion effect in‑camera
 Location work where reducing contrast and controlling specular highlights helps preserve highlight detail
 Creative stills when a subtle, filmic glow or softened look is required
Key specifications
 Filter type: Black Diffusion (optical diffusion glass)
 Included strengths: 1/4 and 1/8 diffusion
 Mount/thread size: 55 mm screw‑in
 Intended use: still photography and video
 Effect: softens highlights, reduces contrast, produces halation around bright areas
How to use
Screw the chosen diffusion filter onto any lens with a 55 mm filter thread and compose as usual. For stronger softening and more pronounced bloom, use the 1/4 filter; for very subtle diffusion, use the 1/8 filter. Evaluate the effect in camera using live view or test frames and adjust exposure and lighting as needed since diffusion can slightly alter perceived contrast and highlight roll‑off. Combine with other lens filters or accessories only when compatible threads and filter stacking allow safe, vignetting‑free operation.
Usage recommendations
Use the 1/4 filter for portraits or highlights that need noticeable bloom; choose the 1/8 filter when you want only a hint of softening. When shooting wide open, check for edge softening on certain lenses; stop down slightly if necessary. Store filters in a protective case to avoid scratches and clean with lens‑safe materials.

## FAQ

### How much does the K&F Concept SB7879 Black Diffusion 1/4 & 1/8 — 55mm cost, and is it available for purchase?

The price is 35.49 € (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 20.07.2026 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/11374401/65865532_large.webp