You can remove areas from an existing mask in Lightroom by subtracting from it using various masking tools. Here's how:
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Access the Masking Panel: Make sure you're in the Develop module. Locate and open the Masking panel. It's usually represented by an icon that looks like a circle with a dashed outline.
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Select Subtract: In the Masking panel, find and click the "Subtract" option. This tells Lightroom you want to remove portions of the currently active mask.
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Choose a Masking Tool: After clicking "Subtract," you'll need to select a tool to use for the subtraction. You can choose from:
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Brush: This allows you to paint away areas of the mask with adjustable size, feather, and flow.
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Linear Gradient: Creates a gradual transition, useful for subtracting a gradient effect from the mask.
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Radial Gradient: Subtracts a circular or elliptical gradient.
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Color Range: Subtracts areas based on a specific color you select.
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Luminance Range: Subtracts areas based on brightness values.
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Depth Range: (Available for photos with depth map data) subtracts based on depth.
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Object Selection: Attempts to automatically select and subtract a specified object.
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Select Subject: Automatically selects the subject and subtracts it from the mask.
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Select Sky: Automatically selects the sky and subtracts it from the mask.
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Apply the Subtraction: Use the selected tool to subtract from the mask. For example, if you chose the Brush tool, paint over the areas you want to remove from the mask. If you chose a gradient tool, drag to create the gradient.
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Adjust as Needed: You can refine the subtraction by adjusting the tool settings (e.g., brush size, feather) or by adding further subtractions using other tools.
By following these steps, you can precisely control and refine your masks in Lightroom.
