Add masking

A fundamental photo-editing operation used to expand or merge selection boundaries within a mask.

Masking Modalities in adobe-lightroom

• Add masking: Expands the active selection by combining it with a new area.
• Subtract masking: Removes the newly defined area from the current selection.
• intersect-masking: A precision-focused mode (introduced late 2023) that isolates only the area where two masks overlap, enabling highly controlled Local adjustments.

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Source: 2026 04 21 Lightroom Intersect Masking for Precise Local Adjustments

Source Notes

• 2026-04-21: [[concepts/lightroom|Lightroom Intersect Masking for Precise Local Adjustments]]