# NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) vs Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9): specs and price compared

A sourced, side-by-side comparison of the NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) (NiSi) and Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) (Freewell) among nd filters. NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) is the cheaper of the two at $245.

## Side by side

| Spec | NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) | Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) |
| --- | --- | --- |
| US price | $245 | $499.99 |
| Brand | NiSi | Freewell |
| Released | 2023 | 2024 |
| Filter type | variable | variable |
| Density range stops | 1 to 5 (ND2-ND32) | 1 to 9 (two filters: 1-5 and 6-9, hybrid reversible with CPL/ND32-CPL) |
| Common thread sizes (mm) | 40.5-105 | 67, 72, 77, 82 (via included adapter rings) |
| Coating | NiSi Nano Coating (waterproof, anti-reflective, smudge-proof) | multi-coated German optics (dust/oil/scratch/water resistant) |
| Color cast note | Marketed as "True Color" - engineered to avoid the blue/magenta color shift typical of variable ND filters | Freewell markets a proprietary 'TRUE COLOR' coating process specifically to minimize the color shift common to other VNDs |
| Front filter thread | Yes | — |
| Magnetic | No | Yes |
| Glass type | high-definition optical glass | optical glass (German optics, brand does not publish substrate name) |

## Key differences

- Density range stops: NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) 1 to 5 (ND2-ND32) vs Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) 1 to 9 (two filters: 1-5 and 6-9, hybrid reversible with CPL/ND32-CPL)
- Common thread sizes (mm): NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) 40.5-105 vs Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) 67, 72, 77, 82 (via included adapter rings)
- Coating: NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) NiSi Nano Coating (waterproof, anti-reflective, smudge-proof) vs Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) multi-coated German optics (dust/oil/scratch/water resistant)
- Color cast note: NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) Marketed as "True Color" - engineered to avoid the blue/magenta color shift typical of variable ND filters vs Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) Freewell markets a proprietary 'TRUE COLOR' coating process specifically to minimize the color shift common to other VNDs
- Magnetic: NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) No vs Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) Yes
- Glass type: NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) high-definition optical glass vs Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) optical glass (German optics, brand does not publish substrate name)

## Sources

- NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop): https://nisiopticsusa.com/product/nisi-82mm-true-color-nd-vario-pro-nano-1-5stops-variable-nd/ (nisiopticsusa.com, verified 2026-08-16)
- Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9): https://freewellgear.com/products/k2-versatile-magnetic-filter-system (freewellgear.com, verified 2026-08-16)

Canonical: https://frontdeskreview.com/gear/nd-filters/nisi-true-color-nd-vario-pro-nano-vs-freewell-k2-versatile-magnetic-vnd/
Cite: Per The Front Desk Review, NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) ($245) vs Freewell K2 Versatile Magnetic Filter System (VND1-5 / VND6-9) ($499.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/nd-filters/nisi-true-color-nd-vario-pro-nano-vs-freewell-k2-versatile-magnetic-vnd/
License: CC BY 4.0.