# Neutral Density Filter Set K&F SB9521 — 4-in-1 ND4 ND8 ND16 ND32 for GoPro Hero 9/10/11/12/13

**URL:** https://aio.lv/en/product--kf-sb9521--11848972
**Data updated:** 2026-03-09 17:24 (EET)
**Category:** Action Camera Accessories
**Manufacturer:** K&F
**Manufacturer code:** SB9521
**EAN:** 6942052548397
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 61.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 50.82 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kf-sb9521--11848972

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.89 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

K&F SB9521 is a 4‑in‑1 neutral density (ND) filter set designed for GoPro Hero 9, 10, 11, 12 and 13 action cameras. The kit includes ND4, ND8, ND16 and ND32 filters to reduce light intake by 2–5 stops for smoother motion, proper exposure in bright conditions, and creative motion blur. Suitable for outdoor, water and high‑brightness shooting where shutter speed control and cinematic effects are needed.

## Long description

K&F SB9521 is a 4-in-1 neutral density filter set designed specifically for GoPro Hero 9, 10, 11, 12 and 13 action cameras. The kit contains four screw-on ND filters — ND4, ND8, ND16 and ND32 — that reduce incoming light by approximately 2, 3, 4 and 5 stops respectively. These filters enable smoother motion rendering, more accurate exposure control in bright environments, and controlled motion blur for cinematic footage when using the fixed-lens, high-frame-rate capture of compatible GoPro models.
Advantages
The K&F SB9521 ND set provides precise attenuation of light without affecting color balance, allowing consistent white balance and image fidelity. Each filter is designed for secure attachment to compatible GoPro housings or mounts and offers optical-grade glass for clear, distortion-free results. The four-step density range covers common outdoor and water-based scenarios, reducing the need for constant ISO or shutter adjustments and enabling creative control over shutter speed and frame blending.
Suitable for
Bright outdoor filming such as beaches, snow, and deserts
Water sports and action scenes where highlights need control
Cinematic motion blur at standard video frame rates
Time-lapse sequences in strong daylight
High-frame-rate capture when preventing overexposure
Key specifications
Filter types: Neutral density (ND) — ND4, ND8, ND16, ND32
Light reduction: approximately 2, 3, 4 and 5 stops respectively
Compatibility: designed for GoPro Hero 9, 10, 11, 12, 13 action cameras
Optical material: multi-coated optical glass for reduced reflections and improved light transmission
Mounting: screw-on / snap-fit design compatible with appropriate GoPro lens housings or filter adapters
Finish: anti-reflective coatings to preserve contrast and color fidelity
How to use
Choose the ND filter that matches the desired exposure reduction for the shooting conditions and attach it securely to the compatible GoPro housing or lens adapter. Use ND4/ND8 for moderately bright conditions and ND16/ND32 for very bright scenes or when you need pronounced motion blur. After mounting, frame and set the camera exposure and shutter speed according to the creative intent; verify focus and white balance on the camera display. Remove and store filters in their protective case when not in use to avoid scratches and contamination.
Usage recommendations
For beach, snow, or desert environments start with ND16 and switch to ND32 in direct sunlight with minimal cloud cover. For water sports where rapid lighting changes occur, carry ND4 and ND8 for quick swaps. Clean filters with a microfiber cloth and lens-safe solution and avoid touching the glass surface to maintain optical performance.

## FAQ

### How much does the K&F SB9521 ND Filter Set for GoPro Hero 9–13 cost, and is it available for purchase?

The price is 61.49 € (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 10.07.2026 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/11848972/67247671_large.webp