# Diffusion Filter K&F HD Black Diffusion 1/4, 77 mm

**URL:** https://aio.lv/en/product--kf-sb7501--11878867
**Data updated:** 2026-03-09 20:44 (EET)
**Category:** Camera Filters
**Manufacturer:** K&F
**Manufacturer code:** SB7501
**EAN:** 5904647814974
**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-sb7501--11878867

## 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 1/4 is a screw-in lens diffusion filter with 77 mm diameter that softens highlights and reduces contrast for smoother skin tones and cinematic glow. Designed for portrait, wedding and video work, it creates subtle bloom around light sources while preserving overall sharpness. Fits lenses with 77 mm filter thread for creative diffusion effects.

## Long description

The K&F HD Black Diffusion 1/4, 77 mm is a screw-in lens diffusion filter designed to soften highlights and reduce overall contrast while maintaining image clarity. It produces a subtle bloom around bright areas, creating smoother skin tones and a cinematic glow without heavily degrading fine detail. The 77 mm diameter fits lenses with a 77 mm filter thread and is intended for portrait, wedding and video applications where controlled diffusion enhances mood and subject rendering.
Advantages
This diffusion filter provides gentle highlight halation and lowered contrast for natural-looking skin tones and a film-like atmosphere. Its optical construction preserves center sharpness while creating a soft, pleasing glow around specular highlights. The screw-in metal frame ensures secure attachment and consistent alignment on lenses with a 77 mm thread.
Suitable for
Portrait photography to smooth skin texture
Wedding and event shoots requiring flattering light and softer highlights
Video and cinematography for subtle bloom and cinematic aesthetic
Outdoor and studio lighting setups where highlight control is needed
Key specifications
Filter type: black diffusion (strength 1/4)
Mount: screw-in circular filter
Diameter: 77 mm
Effect: softens highlights, reduces contrast, creates bloom around light sources
Optical performance: preserves central sharpness while introducing controlled diffusion
Frame: metal threaded ring for secure attachment
How to use
Screw the K&F HD Black Diffusion 1/4 onto the front filter thread of a lens with a 77 mm diameter, ensuring the filter is threaded on evenly and tightened without over-torquing. Compose and expose as you would normally; the filter will reduce contrast and add highlight bloom, so monitor highlights and adjust exposure or lighting if necessary. For video, test white balance and focus before recording to confirm the desired softening effect while preserving essential detail.
Usage recommendations
Start with the filter in place and make minor adjustments to lighting and exposure to compensate for reduced contrast. Use at wider apertures for a more pronounced softening of facial details, or stop down to retain more texture while keeping highlight bloom. Combine with gentle diffusion lighting for a cohesive cinematic look.

## FAQ

### How much does the K&F HD Black Diffusion 1/4 filter, 77 mm 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 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/11878867/67296485_large.webp