Best Nd Filters · head-to-head

NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) vs K&F Concept Nano-X Variable ND Filter (ND2-ND400)

A sourced, side-by-side comparison. K&F Concept Nano-X Variable ND Filter (ND2-ND400) is cheaper at $93.99. Every spec and price links to its source.

Which is better: the NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) or K&F Concept Nano-X Variable ND Filter (ND2-ND400)?

On the specs we track, they're closely matched. The K&F Concept Nano-X Variable ND Filter (ND2-ND400) is the cheaper at $93.99.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) K&F Concept Nano-X Variable ND Filter (ND2-ND400)
US price $245 $93.99
BrandNiSiK&F Concept
Released20232023
Filter type variable variable
Density range stops 1 to 5 (ND2-ND32) 1 to 9 (ND2-ND400)
Common thread sizes (mm) 40.5-105 37-105 (49, 52, 55, 58, 62, 67, 72, 77, 82 common)
Coating NiSi Nano Coating (waterproof, anti-reflective, smudge-proof) 28-layer multi-coating (nano, waterproof/oil-proof)
Color cast note Marketed as "True Color" - engineered to avoid the blue/magenta color shift typical of variable ND filters No hard-stop detents; an X-pattern/color cast can appear if rotated past the effective range
Front filter thread Yes Yes
Magnetic No No
Glass type high-definition optical glass Japanese AGC optical glass

Sources — NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop): nisiopticsusa.com (verified 2026-08-16). K&F Concept Nano-X Variable ND Filter (ND2-ND400): kentfaith.com (verified 2026-08-16).

What's the difference between the NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) and K&F Concept Nano-X Variable ND Filter (ND2-ND400)?

Where the two actually differ on the specs we track (5 of 8). Matching specs are omitted.

  • Density range stops: NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) 1 to 5 (ND2-ND32) vs K&F Concept Nano-X Variable ND Filter (ND2-ND400) 1 to 9 (ND2-ND400)
  • Common thread sizes (mm): NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) 40.5-105 vs K&F Concept Nano-X Variable ND Filter (ND2-ND400) 37-105 (49, 52, 55, 58, 62, 67, 72, 77, 82 common)
  • Coating: NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) NiSi Nano Coating (waterproof, anti-reflective, smudge-proof) vs K&F Concept Nano-X Variable ND Filter (ND2-ND400) 28-layer multi-coating (nano, waterproof/oil-proof)
  • 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 K&F Concept Nano-X Variable ND Filter (ND2-ND400) No hard-stop detents; an X-pattern/color cast can appear if rotated past the effective range
  • Glass type: NiSi SWIFT True Color ND-VARIO Pro Nano (1-5 Stop) high-definition optical glass vs K&F Concept Nano-X Variable ND Filter (ND2-ND400) Japanese AGC optical glass

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