Layer masking

Non-destructive editing technique using grayscale masks to selectively reveal or hide parts of a layer (white = reveal, black = hide).

Key applications

• Compositing multiple images: Combine optimal elements from similar shots (e.g., fixing closed eyes in group photos)
• Seamless blending: Merge elements between layers without destructive edits
• Precision editing: Adjust masks with brush tools for soft transitions

Workflow example: Combining photos in Photoshop

• Problem: Fix issues like closed eyes in group photos across multiple shots
• Steps:
  • Load images into a layer stack and auto-align
  • Apply layer masks to each layer
  • Use mask to selectively reveal best elements (e.g., open eyes from one layer, clear background from another)
• Key insight: Works without tripod alignment; relies on auto-alignment and mask refinement

2026 04 14 Combining photos in Photoshop