Masking in Lightroom for Android

Learn more about photo editing with the Masking tool in Lightroom to edit specific parts of an image.

The Masking tool in Lightroom lets you select parts of an image to make specific editing adjustments using various masking techniques and local adjustments. This article talks about multiple masks in Lightroom and how to use them. 

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Lightroom for mobile (Android) now supports ML masks on devices (64-bit) <= 6GB RAM. 

The Masking Tools

Use the following mask tools to make a selection:

Brush Mask

brush

A. Eraser B. Size C. Feather D. Flow E. Invert F. Delete 

Use the corresponding icons on the left side of the screen to specify:
  • Size - Specifies the diameter of the brush tip in pixels.
  • Feather - Creates a soft-edged transition between the brushed area and the surrounding pixels.
  • Flow - Controls the rate of application of the adjustment.

To make a more precise selection, use the Eraser tool on the left side of the screen to erase the mask area. 

Linear Gradient

Drag the blue pin in the area you want to edit. This is useful to adjust a large portion of the photo with a gradually fading pattern that creates soft transitions.

linear gradient
Linear Gradient in Lightroom for mobile (Android).

A. Invert B. Delete 

  • Drag the blue pin at the center of the overlay to make a selection.
  • Tap and rotate the out gradient white line at the center to adjust the tilt (angle) of the overlay.
  • Tap and drag either of the outer gradient white lines toward the edge of the photo to expand the effect at that end of the spectrum; drag toward the center of the photo to contract the effect at that end of the spectrum.
  • Use the Eraser tool to erase parts of the mask area.

Radial Gradient

Drag the blue pin to select areas of the photo you want to edit. This tool helps you make local adjustments inside or outside an oval shape. Use the Feather slider to determine how soft you want the adjustments to be.

radial-gradient

A. Feather B. Invert C. Delete 

  • To move and position the overlay on the photo, drag the blue pin to the center of the selection overlay.
  • To adjust the size and shape, drag the white pins.
  • To adjust the Feather of the radial selection overlay, drag the Feather control on the left side of the screen. 
  • To apply the edits outside the radial selection overlay or invert the radial selection mask, tap the Invert icon on the left.

Color Range

Use this tool to sample color within the mask area. Do any of the following:

color range masking

A. Change Color B. Refine C. Invert D. Delete 

  • Tap and drag an area around the colors in the photo that you want to adjust. You can use two modes to make this selection.
  • You can update the color samples using the Change Color option.
  • Adjust the Refine slider to narrow or broaden the range of selected colors.
  • Tap Invert if you wish to invert the selection.
  • Tap Delete to remove a Color Range mask.

Luminance Range

Select a point or area in the photo using this tool. All areas with the selected range of brightness will become a mask. This way, you can make precise adjustments to just those levels of brightness in a photo. To select a luminance range within the mask area, do any of the following:

luminance-range-masking

A. Change Luminance B. Invert C. Delete 

  • Define the luminance range using the Select Luminance slider. You can use two modes to make the selection. 
  • Tap Change Luminance in the corresponding control on the left to change the luminance range. 
  • If you wish to invert the selection, tap Invert.
  • Tap Delete to remove the luminance range mask.

Depth Range 

This tool is enabled only for photos containing depth information.
Use this tool to select areas based on their distance from the camera. To select a depth range to adjust, do any of the following:

depth range masking

A. Change Depth B. Invert C. Delete 

  • Drag on the photo to define the depth by an area, or use the Select Depth slider to adjust the depth manually.
  • Tap Change Depth to redefine the selection.
  • Tap Invert if you wish to invert a tool.
  • Tap Delete to remove the mask.

Select Subject

  1. Open a photo that you want to edit and select Masking.

  2. Select the '+' icon > Select Subject. Lightroom will run an analysis and automatically select the most prominent subject for you.

  3. To refine the mask, select Add or Subtract. To make local adjustments, use the editing sliders at the bottom of the screen. For more, see Local adjustments.

Select Sky

  1. Open a photo that you want to edit and select Masking.

  2. Select the '+' icon > Select Sky. Lightroom will automatically select the sky in a photo, and you can view the mask as an overlay (red, by default).

  3. Once you have refined the mask area, you can make selective adjustments to create precise photographic edits. For more information, see Local Adjustments

Select Background 

  1. Open a photo that you want to edit and select Masking.

  2. Select the '+' icon > Select Background. Lightroom will automatically select the background in the photo, and you can view the mask as an overlay (red, by default). 

  3. Once you have refined the mask area, you can now make selective adjustments to create precise photographic edits. For more information, see Local Adjustments.

Add to mask

Once you have created a mask, you can add to it using the masking tools. To add to an existing mask, do the following:

  1. To add to an already existing mask, tap the three-dot icon and tap Add to "Mask 1"

  2. Select one of the masking tools to add the new mask.

Subtract from mask

Once you have created a mask, you can subtract from it using the masking tools. To subtract from an existing mask, do the following:

  1. Click Subtract from the masking panel.

  2. Select one of the masking tools to subtract from the mask with.

Rename masks and components

  1. Tap the three-dot icon in front of the mask or the component that you want to rename.

  2. Select Rename from the menu. 

  3. Enter the name of the mask and tap Ok.

Invert a mask

  1. In the masks panel, long-press the mask group you want to invert. Tap Invert Mask in the menu. All the masking components in that mask will be inverted. The first component of the mask group will be inverted, while for the remaining components, the add/subtract mode will be toggled. The resultant will be an overall inverted mask.

  2. You can also tap Duplicate and Invert mask to duplicate a mask and create an inverse copy in the masks panel.

Invert a mask component

  1. Once you have created a mask and wish to invert a component of the mask, slide the panel on the left side of the screen.

  2. Tap Invert.

Edit Mask Overlay

  1. In the Masking panel, tap the three-dot icon in the upper-right corner.
  2. Change the overlay color from the default red to either blue or green by tapping the desired Color option.

  3. You can also choose from several overlay modes such as Color overlay on B&W, Photo on B&W, and more when you tap the Mode menu.

Local Adjustments

To make local adjustments to your photo, select the type of adjustment you want to make from the Editing panel at the bottom of your screen. 

Light

  • Exposure - Sets the overall image brightness. Applying an Exposure local correction can achieve results similar to traditional dodging and burning
  • Contrast - Adjusts image contrast, mainly affecting mid-tones
  • Highlights - Recovers detail in overexposed highlight areas of an image
  • Shadows - Recovers detail in underexposed shadow areas of an image
  • Whites - Adjusts the white points in a photo
  • Blacks - Adjusts the black points in a photo

Color

  • Temp - Adjusts the color temperature of an area of the image, making it warmer or cooler. A graduated filter temperature effect can improve images captured in mixed-lighting conditions.
  • Tint - Compensates for a green or magenta color cast
  • Saturation - Adjusts the vividness of the color
  • Hue - Adjusts the hue in a photo. Tap Use Fine Adjustment for precise adjustments.
  • Color - Applies a tint to the area affected by the local correction. Select the hue by dragging the Color swatch. The Color effect is preserved if you convert the photo to black and white.

Effects

  • Texture - Smoothens or accentuates textured details in your photo. Move the slider to the left to smoothen details; move it to the right to accentuate details. When you adjust the Texture slider, the color or tonality does not change.
  • Clarity - Adds depth to an image by increasing local contrast
  • Dehaze - Reduces or increases existing haze in a photo

Details

  • Noise - Reduces luminance noise, which can become apparent when shadow areas are opened
  • Sharpness - Enhances edge definition to bring out details in the photo. A negative value blurs details

Optics

  • Moiré - Removes moiré artifacts or color aliasing
  • Defringe - Removes fringe colors along edges

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