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4 x 4" Neutral Density Filter fit and requirements

4 x 4" Neutral Density Filter: official system, required adapter or ring, and fit limits.

Reviewed by LensMatch editorial · 2026-10-30

Tiffen lists 4 x 4" Neutral Density Filter as a filter product with 13 published SKU options. Read the exact option before comparing a lens thread or holder system. Maker-listed filter product family and published SKU options. A nominal size does not by itself verify front-thread pitch or optical fit.

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Official product identity

FieldVerified value
MakerTiffen
Maker categoryneutral density
Maker product formsquare holder
Listed nominal sizesSee variant table
Published SKU options13

Compare lens filters listings

Confirm the maker SKU, physical mounting system and verified lens front thread. A nominal size alone does not prove fit or freedom from vignetting.

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How it attaches

The manufacturer lists the exact SKU options below. A nominal diameter is not automatically a verified front screw thread. Check the option’s mounting form, thread pitch or holder system and the lens’s documented front interface before selecting it.

Maker SKUNominal sizePublished option
44ND1Not specifiedDensity: 0.1
44ND2Not specifiedDensity: 0.2
44ND3Not specifiedDensity: 0.3
44ND4Not specifiedDensity: 0.4
44ND6Not specifiedDensity: 0.6
44ND8Not specifiedDensity: 0.8
44ND9Not specifiedDensity: 0.9
44ND10Not specifiedDensity: 1
44ND12Not specifiedDensity: 1.2
44ND15Not specifiedDensity: 1.5
44ND18Not specifiedDensity: 1.8
44ND20Not specifiedDensity: 2
44ND21Not specifiedDensity: 2.1

What remains unverified

A maker’s accessory specification establishes its intended connection system. It does not guarantee no vignetting, no hood interference or fit on every lens sharing a printed diameter. Check the exact lens manual and perform a careful test.

Keep exploring

Filter connection checkerSeparate thread and holder decisions

Official sources and scope

Checked for this reference on October 30, 2026. Product firmware and support lists can change; inspect the current maker page for your exact revision.