# K&F Filtre Nano B series Variable ND2-400 77mm

**Brand:** K&F Concept
**Category:** Photo
**Code (GTIN/SKU):** 6936069203912
**Canonical URL:** https://openreviews.io/en/reviews/kfconcept/k-f-filtre-nano-b-series-variable-nd2-400-77mm-6936069203912

## Rating: 4.6/5 ★★★★★ — 11 reviews analyzed
_Confidence: high_

## At a glance

K&F Filtre Nano B series Variable ND2-400 77mm (K&F Concept) reviews: 4.6/5 based on 11 analyzed reviews, updated September 8, 2026.

Praised: value for money and build quality.

11 reviews analyzed, all published on other sites.
Other sites: 1 source, 11 reviews, average rating 4.6/5.
How we count reviews: https://openreviews.io/en/methodology

## AI summary

This variable neutral density filter is designed for 77 mm diameter lenses, offering a versatile solution for controlling exposure during shooting. Users highlight that it is a good quality accessory that perfectly fulfills its role in light reduction. It particularly stands out for its excellent value for money, making it an attractive choice for photographers and videographers looking for an adjustable filter without breaking the bank.

## Strengths

- **Value for money** — The filter offers excellent light reduction performance for a very reasonable investment.
- **Build quality** — The overall design and quality of this 77 mm variable filter inspire confidence during use.

## Frequently asked questions

- Is this filter easy to screw onto the lens?
- Is the density adjustment smooth?
- Does this filter affect image sharpness?
- Is there a noticeable color cast with this model?

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_Source: OpenReviews — https://openreviews.io/en/reviews/kfconcept/k-f-filtre-nano-b-series-variable-nd2-400-77mm-6936069203912_