K&F Concept Variable ND2-ND400 (82mm)
This K&F Concept Variable ND covers an 82mm thread with a wide 1-9 stop range (ND2-ND400), a beginner-tier budget option for big pro zooms like the 24-70 GM II and RF 24-105 f/2.8. It's a cost-effective way to get variable density on large-thread glass. Push it to maximum density on wide-angle lenses and you risk the X-pattern that budget VNDs are prone to.
Scores
BreakdownHideOverall59±6Caliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions; excluded here: compatibility (no ecosystem dimension).
Scores
BreakdownHideCaliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions; excluded here: compatibility (no ecosystem dimension).
The ± band on the overall score reflects sourcing confidence — wider when fewer specs are verified.
How each score is computed: our scoring methodology.
Specifications
| Spec | Value | Verification |
|---|---|---|
| filter type | Variable NdSourced | Sourced |
| thread (mm) | 82Sourced | Sourced |
| stops | 1-9 stopsSourced | Sourced |
3/3 detail specs sourced. Amber rows are flagged for verification — we show them as reported, not confirmed.
Verdict
Best for
- Budget VND for 82mm pro zooms (24-70 GM II, RF 24-105 f/2.8)
Who should skip this
- Wide-angle at max density (X-pattern risk on budget VNDs)
Where to buy
List price $30
Prices are a guide and can change — confirm the current price on the retailer's site before buying.
Prices last checked Jun 13, 2026 — retailer prices change often, so click through for the current price.
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Compatibility
No platform-specific compatibility requirements — this works in any standard photo / video setup.
Upgrade path
Outgrow it and the Hoya ProND 1000 10-Stop Fixed ND (77mm) is the natural next step up in filters. See it →