The Sigma GP-21 Guide Plate can be used to accurately cut a gel filter to fit the rear slot in the Sigma 20mm f/1.4 DG DN Art Lens.
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Key Features
- For Sigma 20mm f/1.4 DG DN Art Lens
- Template for Rear Filter Slot
- Replacement Part
The Sigma GP-21 Guide Plate can be used to accurately cut a gel filter to fit the rear slot in the Sigma 20mm f/1.4 DG DN Art Lens.
Sigma 414T69 Overview
Sigma 414T69 Specs
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Sigma 414T69 Reviews
Simple tool to add gel filters
By David
Rated 4 out of 5
Date: 2025-06-09
This template provides a simple way to add gel filters to the back of a Sigma 20mm f/1.4 DG DN Art lens. It is easy to use and adds a lot of capability to the lens.
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Is it ND Filter?
Is it ND Filter?
Sigma GP-21 Guide Plate for 20mm is just a template for rear filter slots which can be crafted out of ND gels. There are no gels or filters included in the box.
Date published: 2023-06-08