Sigma RND-21 Drop-In WR VND Filter for 300-600mm f/4 DG OS Lens Sony E
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Sigma RND-21 Drop-In WR Variable Neutral Density Filter for 300-600mm f/4 DG OS Sports Lens Sony E

SKU: SGAK4965 MFR: AK4965
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Key Features

  • Achieve stunning effects with this Sigma variable ND filter, controlling light precisely.
  • Enjoy 1 to 7 stops of light reduction for creative long exposure photography.
  • Maintain exceptional image quality with a dedicated Sigma filter for your lens.
  • The RND-21 drop-in filter is designed specifically for 300-600mm Sony E mount lenses.
  • Capture smooth, cinematic videos with reduced rolling shutter using this ND filter.
  • Protect your lens while controlling exposure; scratch resistance ensures durability.
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Temporarily On Backorder?Expected Availability: 10/2025
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Sigma RND-21 Specifications

  • Compatibility

    300-600mm f/4 DG OS Sports Lens (Sony E)

  • Filter Type

    Variable Neutral Density

  • Exposure Reduction

    1 to 7-Stop

  • Size

    Dedicated

  • UPC Code

    198983941752

About Sigma RND-21

A drop-in variable ND filter that allows effect adjustment via dial while attached to the lens. It enables up to 7 stops of light reduction to achieve slower shutter speeds without excessive stopping down, making it ideal for panning shots in motorsports photography.

Sigma RND-21 Features

  • Drop-in variable ND filter for 300-600mm f/4 DG OS Sports Lens
  • Adjust effect via dial for up to 7 stops light reduction
  • Perfect for panning shots and motorsports photography

Warranty Information

This product has a limited warranty of 12 months for parts and 12 months for labor.

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Key Features

  • Achieve stunning effects with this Sigma variable ND filter, controlling light precisely.
  • Enjoy 1 to 7 stops of light reduction for creative long exposure photography.
  • Maintain exceptional image quality with a dedicated Sigma filter for your lens.
  • The RND-21 drop-in filter is designed specifically for 300-600mm Sony E mount lenses.
  • Capture smooth, cinematic videos with reduced rolling shutter using this ND filter.
  • Protect your lens while controlling exposure; scratch resistance ensures durability.

What's in the box:

  • Sigma RND-21 Drop-In WR Variable Neutral Density Filter
  • Sigma 1 Year Limited Warranty