To remove from a selection in Photoshop, hold down the Alt (Option on Mac) key while using a selection tool. This will switch the tool to "subtract from selection" mode.
Here's a breakdown:
- Selection Tools: Ensure you're using a selection tool like the Rectangular Marquee Tool, Elliptical Marquee Tool, Lasso Tool, Polygonal Lasso Tool, Magnetic Lasso Tool, Quick Selection Tool, or Magic Wand Tool.
- Subtracting: Press and hold the Alt (Windows) or Option (Mac) key. You'll usually see the cursor change to indicate it's in subtract mode (often with a minus sign next to the cursor).
- Drawing: While holding Alt/Option, click and drag to draw an area you want to remove from the existing selection.
- Release: Release the mouse button and the Alt/Option key. The area you drew will be subtracted from the current selection.
Visual Indicators:
Photoshop often visually indicates the current selection mode near the top of the screen (e.g., in the Options Bar below the menu). Look for icons representing "Add to selection," "Subtract from selection," and "Intersect with selection." Holding Alt/Option typically toggles the "Subtract from selection" mode.
