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49 mm lens filter fit guide

Verified 49 mm lens examples, step-up ring direction and fit limitations.

Reviewed by LensMatch editorial · 2026-10-30

A lens with a verified Ø49 mm ordinary front thread can accept a same-diameter screw-in filter as a mechanical candidate. Magnetic and holder systems need their own checks.

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Verified lens examples

Canon RF-S18-45mm F4.5-6.3 IS STMOfficial filter specificationCanon EF 50mm f/1.8 STMOfficial filter specificationSony FE 50mm F1.8 (SEL50F18F)Official filter specificationHD PENTAX-DA 35mmF2.8 Macro LimitedOfficial filter specificationHD PENTAX-D FA MACRO 100mmF2.8ED AWOfficial filter specificationsmc PENTAX-D FA MACRO 50mmF2.8Official filter specificationHD PENTAX-DA 40mmF2.8 LimitedOfficial filter specificationHD PENTAX-FA 43mmF1.9 LimitedOfficial filter specificationHD PENTAX FA-50mmF1.4Official filter specificationsmc PENTAX-DA 35mmF2.4ALOfficial filter specificationsmc PENTAX FA-50mmF1.4 ClassicOfficial filter specificationHD PENTAX-DA 70mmF2.4 LimitedOfficial filter specificationHD PENTAX-FA 77mmF1.8 LimitedOfficial filter specificationHD PENTAX-DA 15mmF4ED AL LimitedOfficial filter specificationHD PENTAX-FA 35mmF2Official filter specification08 WIDE ZOOMOfficial filter specificationsmc PENTAX-A ★ 645 600mmF5.6ED[IF]Official filter specificationCanon RF-S10-18mm F4.5-6.3 IS STMOfficial filter specificationSigma 70mm F2.8 DG MACRO | ArtOfficial filter specificationSigma 70mm F2.8 DG MACRO | ArtOfficial filter specificationSigma 70mm F2.8 DG MACRO | ArtOfficial filter specificationFujifilm XC13-33mmF3.5-6.3 OISOfficial filter specificationLeica APO-Summicron-M 75 f/2 ASPH.Official filter specificationLeica APO-Telyt-M 135 f/3.4Official filter specificationLeica Noctilux-M 35 f/1.2 ASPH.Official filter specificationLeica Summicron-M 66 f/2Official filter specificationLaowa Laowa 50mm f/2.8 2x Ultra Macro APOOfficial filter specificationLaowa Laowa 7.5mm T2.1 MFT CineOfficial filter specificationLaowa Laowa 10mm T2.1 Zero-D MFT CineOfficial filter specificationLaowa Laowa 17mm T1.9 MFT CineOfficial filter specificationLaowa Laowa 50mm T2.9 Macro APO MFT CineOfficial filter specificationVoigtländer APO-LANTHAR 28mm F2 AsphericalOfficial filter specificationVoigtländer APO-LANTHAR 35mm F2 AsphericalOfficial filter specificationVoigtländer APO-LANTHAR 50mm F2 AsphericalOfficial filter specificationVoigtländer MACRO APO-ULTRON 35mm F2Official filter specificationVoigtländer APO-LANTHAR 28mm F2 AsphericalOfficial filter specificationVoigtländer APO-LANTHAR 35mm F2 AsphericalOfficial filter specificationVoigtländer APO-LANTHAR 50mm F2 AsphericalOfficial filter specificationVoigtländer HELIAR classic 50mm F1.5Official filter specification
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Ring direction

A step-up ring starts with the lens thread at 49 mm and presents a larger filter thread. A smaller front filter requires a step-down ring and may vignette.

What this does not prove

Thread size alone does not verify hood clearance, magnetic-system coupling, frame thickness or corner shading. Test at the widest focal length.

Keep exploring

Check a lens and filterRing direction calculator

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.