Subject Masking
Subject masking is a digital photo editing technique used to isolate a portrait subject from its background, allowing selective adjustments to be applied independently to each area. By creating a precise mask around the subject—typically the person’s face and body—editors can modify exposure, color, contrast, and sharpness without affecting the surrounding areas. This selective approach enables more refined control over the final image and is a standard workflow in professional portrait retouching.
Creating the Mask
Masks can be created through several methods in Photoshop, ranging from manual selection tools to automated features. The quickest approach uses Photoshop’s Select Subject tool, which uses machine learning to detect and isolate portrait subjects automatically. More precise results can be achieved with manual selection using the lasso, pen, or refine edge tools, which give the editor pixel-level control over the mask boundary. Once created, the mask can be refined and adjusted to ensure clean edges, particularly around fine details like hair.
Applications
Subject masking is commonly used to brighten or darken a subject’s face relative to the background, enhance skin clarity, adjust color temperature, or sharpen facial features while keeping the background unaffected. It can also be used in reverse—to adjust the background while leaving the subject unchanged. This technique is particularly valuable in portrait photography where different areas require different treatment, such as brightening a subject’s face that falls in shadow while preserving background detail.
Source Notes
- 2026-04-14: How to get TACK SHARP photos with any camera!
- 2026-04-07: Lightroom Classic Single Click Automated AI Mask Presets for Landscape · ▶ source
- 2026-04-08: Lightroom Dark and Moody Photo Processing for Dramatic Photo Enhanceme · ▶ source
- 2026-04-21: Lightroom · ▶ source
- 2026-04-22: Photoshop · ▶ source