# K&F Concept Nano-X Variable ND Filter (ND2-ND400): specs and price

**Price (US):** $93.99 at kentfaith.com (Current listed price on Kent Faith (K&F official US storefront), 77mm, 1- to 9-stop), as of 2026-08-16. A sourced, dated price of record — other retailers (incl. Amazon) may be lower. Among the 9 nd filters we track it is #3 cheapest of 9; category median $139.
**Brand:** K&F Concept
**Released:** 2023

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $93.99 |
| Brand | K&F Concept |
| Released | 2023 |
| Filter type | variable |
| Density range stops | 1 to 9 (ND2-ND400) |
| Common thread sizes (mm) | 37-105 (49, 52, 55, 58, 62, 67, 72, 77, 82 common) |
| Coating | 28-layer multi-coating (nano, waterproof/oil-proof) |
| Color cast note | No hard-stop detents; an X-pattern/color cast can appear if rotated past the effective range |
| Front filter thread | Yes |
| Magnetic | No |
| Glass type | Japanese AGC optical glass |

## Where it stands

At $94, the K&F Concept Nano-X Variable ND Filter (ND2-ND400) is #3 cheapest of the 9 nd filters we track, where the median is $150. By release date, it is among the newer of the 8 we date.

## Frequently asked questions

**How much does the K&F Concept Nano-X Variable ND Filter (ND2-ND400) cost?**

The K&F Concept Nano-X Variable ND Filter (ND2-ND400) has a US price of $93.99 (Current listed price on Kent Faith (K&F official US storefront), 77mm, 1- to 9-stop), as of 2026-08-16.

**How does the K&F Concept Nano-X Variable ND Filter (ND2-ND400) compare on price?**

At $94, the K&F Concept Nano-X Variable ND Filter (ND2-ND400) is #3 cheapest of the 9 nd filters we track, where the median is $150.

**When was the K&F Concept Nano-X Variable ND Filter (ND2-ND400) released?**

The K&F Concept Nano-X Variable ND Filter (ND2-ND400) was released 2023.

**What are the K&F Concept Nano-X Variable ND Filter (ND2-ND400)'s key specs?**

K&F Concept Nano-X Variable ND Filter (ND2-ND400) (K&F Concept): filter type variable, density range stops 1 to 9 (ND2-ND400), common thread sizes mm 37-105 (49, 52, 55, 58, 62, 67, 72, 77, 82 common), coating 28-layer multi-coating (nano, waterproof/oil-proof), color cast note No hard-stop detents; an X-pattern/color cast can appear if rotated past the effective range. Full sourced spec sheet verified 2026-08-16.

Source: https://www.kentfaith.com/KF01.1465 (kentfaith.com, accessed 2026-08-16)
Corroboration: https://www.bhphotovideo.com/c/product/1832675-REG/k_f_concept_kf01_1465_nano_x_series_nd2_400_filter.html (accessed 2026-08-16)
Canonical: https://frontdeskreview.com/product/nd-filters/kf-concept-nano-x-vnd-nd2-400/
Cite: Per The Front Desk Review, the K&F Concept Nano-X Variable ND Filter (ND2-ND400) price of record was $93.99 as of 2026-08-16 — https://frontdeskreview.com/product/nd-filters/kf-concept-nano-x-vnd-nd2-400/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl