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Aluminium adapter ring for Sigma 20mm f/1.4 lens to Lee SW150 filter holder

Lee Filters

Lee Filters Sigma 20mm f/1.4 DG HSM Art to SW150 Adapter Ring

SKU CH-DMWN-FQN9E

Converts the Sigma 20mm f/1.4 DG HSM Art lens thread to the Lee SW150 filter holder system

  • Converts Sigma 20mm f/1.4 DG HSM Art lens to Lee SW150 filter holder
  • Aluminium-alloy construction with front, compression and locking rings forms secure collar
  • Prevents vignetting while maintaining optimal light transmission
  • Designed specifically for Sigma 20mm f/1.4 DG HSM Art and Lee SW150 Mark II holder
  • Enables use of Lee SW150 series filters for creative control

Sigma 20mm f/1.4 DG HSM Art to SW150 Adapter

This adapter ring connects the Sigma 20mm f/1.4 DG HSM Art lens to the Lee SW150 filter holder system. It is built for photographers who want to use Lee SW150 series filters on this specific wide-angle Art lens. The three-part collar stays attached to the lens for quick filter changes in the field. Aluminium alloy construction provides a secure, repeatable fit.

Check lens model and filter holder before ordering

Verify that you own the exact Sigma 20mm f/1.4 DG HSM Art lens, as the adapter is engineered only for its thread profile. Confirm you are using a Lee SW150 Mark II holder; other holder sizes will not couple with this ring. The collar comprises a front ring, compression ring and locking ring that must all be present for a secure mount. No other Sigma or third-party lenses are supported by this adapter.

Lightweight aluminium adds minimal bulk

The aluminium alloy collar adds negligible weight to the lens barrel and does not alter the lens balance during handheld shooting. No moving parts or electronics mean silent operation and no power draw. The low-profile design avoids vignetting at the wide 20mm focal length when the SW150 holder and filters are attached. Heat dissipation is not a concern for this passive mechanical component.

Highlights

  • Converts Sigma 20mm f/1.4 DG HSM Art lens to Lee SW150 filter holder
  • Aluminium-alloy construction with front, compression and locking rings forms secure collar
  • Prevents vignetting while maintaining optimal light transmission
  • Designed specifically for Sigma 20mm f/1.4 DG HSM Art and Lee SW150 Mark II holder
  • Enables use of Lee SW150 series filters for creative control

Specifications

No published specifications for this item yet.

Questions about this item

Does the adapter ring come with the Lee SW150 filter holder or must that be bought separately?

The adapter ring includes a front ring, compression ring and locking ring that form a collar on the lens; the Lee SW150 filter holder itself is not included and must be purchased separately.

Is this adapter compatible with any Sigma 20mm f/1.4 lens or only the DG HSM Art version?

It is engineered specifically for the Sigma 20mm f/1.4 DG HSM Art lens and the Lee SW150 Mark II holder, so it will not fit other Sigma 20mm models.

Will the 150 mm filter holder vignette on the 20 mm f/1.4 Art lens when using this adapter?

The adapter is designed to prevent unwanted vignetting when the Lee SW150 holder is mounted on the Sigma 20mm f/1.4 DG HSM Art lens.

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