In the Edit panel in the Loupe view, tap Selective icon at the bottom of the screen.

Tap the '+' sign that appears at the upper-left corner and then choose one of the selective edit tools -  Brush Selection,  Radial Selection,  Linear Selection, or  Depth Selection (Tech Preview).

Tap on the photo to view the selection overlay.

Brush Selection  

• To move and position it on the photo, drag the blue pin at the center of the overlay.
• Use the Eraser tool to erase the desired brush selection area.
• To change the size, feather, or flow of the Brush Selection/Eraser, touch the corresponding control on the left, and then drag up or down on the screen to adjust the value.
  
  • 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.

Linear Selection  

• To move and position it on the photo, drag the blue square pin at the center of the overlay.
• Touch and rotate the white line at the center to adjust the tilt (angle) of the overlay.
• Touch and drag either of the outer 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 the desired selection area. 

Radial Selection  

• To move and position the overlay on the photo, drag the pin at the center of the selection overlay.
• To adjust the size and shape, drag the white pins on the left, right, and bottom of the overlay.
• To adjust the Feather of the radial selection overlay, touch the feather control icon on the left and then drag up or down on the screen. As you drag, the Feather value (%) is displayed at the top of the screen.
• To apply the edits outside the radial selection overlay, tap the icon at the left. Tap the icon again to toggle.
• Use the Eraser tool to erase the desired selection area.  

Depth Selection  

To remove or duplicate a selection overlay, long press the blue pin at the center of the selection overlay, and choose the required option from the pop-up menu that appears.

Once you have placed the Brush Selection, Linear Selection, Radial Selection, or Depth Selection overlay, tap any of the edit tiles in the menu — Light, Color, Effects, Details, and Optics. Use the slider controls in the pop-up menu to apply edits on a specific part of your photo.

Tap and hold with one finger on the photo to see a Before view.

In the Edit panel in the Loupe view, tap the Healing icon at the bottom of the screen.

Select one of the following Healing Brush tools:

Heal: Borrows the texture from the source area and matches it to the color and tone of the target area in the photo.

Clone: Replicates the pixels from the source area in the photo to the target area.

Both Heal and Clone tools transfer the texture borrowed from the source area to the target area. The Heal tool, however, considers the colors and tones surrounding the target area and blends everything together. While the Clone exactly replicates the pixels from the source area to the target area.

To move and position the source or target area on the photo, drag the blue pin at the center of that area.

Tap the () icon at the upper-right corner to view the photo edits on fullscreen by hiding the screen controls and the white marquee source/target areas.

Healing options

Long press on the blue pin at the center of the target or source area to bring up the Healing Options context-menu:

• From the context-menu, choose Heal or Clone to switch between the tools.
  
• Delete: Deletes the selected source-target area pair.
• Reset Healing Brush: Resets and removes all the adjustments you've made using the Healing tools.
  

Long-press on the photo to see a Before view.  

In the Edit panel in the Loupe view, tap Crop icon at the bottom of the screen.

The available Cropping options are displayed as tiles, along the bottom of the screen. Swipe to the left or right, to view all the tiles. Tap a tile to apply the corresponding option.

Do one of the following for additional options:

• Tap the Aspect ratio tile to select one of the available cropping aspect ratios.
• Tap the Aspect Locked tile to crop without a preset aspect ratio.
• Tap Straighten tile to automatically straighten the photo.
• Tap the Rotate L tile to rotate the photo anti-clockwise by 90 degrees.
• Tap the Rotate R tile to rotate the photo clockwise by 90 degrees.
• Tap the Flip H tile flip the photo horizontally.
  Tap the Flip V tile to flip the photo vertically.
• Drag the edges and corners of the cropping guide, to change the shape and size of the crop.
• Drag the cropping wheel to crop the photo by a certain angle. You can drag the cropping wheel within the range of -45 to 45 degrees.
• Tap within the cropping guide and drag it to reposition it.
  

Tap and hold with one finger on the photo to see a Before view.

To confirm the edits, tap icon (iPhone)/Done (iPad).  

(iPhone) In the Edit panel in the Loupe view, tap Profiles icon at the bottom of the screen.

• The Adobe Color profile, which is currently applied to your photo is displayed at the top of the screen.
• Tapping Adobe Raw brings up the profile groups menu.  

(iPad) In the Edit panel menu in the Loupe view, tap Browse in the Profiles panel at the top.  

(iPhone) Tap to choose any of the profile groups from the menu to view profiles available in that group.

(iPad) Expand any of the profile groups (explained below) to view the profiles available in that group.

Displays profiles that you've marked as favorite. See Add a profile to Favorites.

This profile group is available for non-raw photos only and provides two profile options - Color and Monochrome.

Note:

When you apply any of the Artistic, B&W, Modern, and Vintage profiles, Lightroom for mobile provides an additional Amount slider that allows you to control profile intensity.  

You can swipe horizontally toward right or left on the profile thumbnails to browse all the profiles available under a selected profile group.

Tap a profile to apply it to your photo.  

Tap and hold with one finger on the photo to see a Before view.

Tap the Undo or Redo icons to move back or forward in your edits, one step at a time.

Open a photo in Loupe view and tap Presets in the Edit panel.

Presets are grouped into the following tabs:

• Recommended These presets are automatically provided to you based on your photo, with the help of Adobe Sensei. The results can change with time, even for the same photo. You can choose from an array of predefined preset options like Strong, B&W, Cool, Warm, etc.
  
• Premium These presets are updated with every release and include categories like Portraits, Travel, Cinematic, Food, Landscape, subject-wise presets, and more.
• Yours These are all the presets that you have created or saved, as well as all the default presets included with Lightroom.

Tap and hold the photo to see how the photo looked without the preset applied.

Tap the Undo or Redo icons to reverse or move forward with your edits.

Open a photo in the Loupe view based on which you want to create a user preset. Do any one of the following:

• In the Loupe view, tap the three-dots () icon at the upper-right corner of the screen to bring up the options menu. Then, choose Create Preset.
  

• (iPhone) In the Edit panel in the Loupe view, tap Presets icon at the bottom of the screen. Tap the three-dots () icon at the upper-right corner of the Presets pop-up screen and choose Create Preset.

• (iPad) In the Loupe view, tap the three-dots () icon at the upper-right corner of the Presets pop-up screen and choose Create Preset.

In the New Preset screen, specify the following:

Preset Name: Type the desired preset name.

Preset Group: By default, custom presets are saved in the User Presets group. You can also create a new group using the Create New Preset Group option.    

Now select which edit settings you want to save as a preset.

Click the Select pop-up menu and choose any of the following options:

• All: Selects all the edit settings groups.
• Modified: Selects only the edits settings that you've applied on the selected photo.
  
• Default: Selects the default set of edit settings. Tools, Optics, and Geometry settings are excluded by default.
• None: Deselects all the edit settings.

To manually select or deselect specific settings, tap the check box next to the edit setting groups. You can also tap the (>) icon to navigate within the edit setting group, and then choose specific settings from the submenu. For example, you can navigate within the Light settings group and then select/deselct any of the settings from the submenu - Exposure, Contrast, Highlights, Shadows, Whites, Blacks, Tone Curve.     

After selecting the required edit settings, tap Save at the upper-right corner.

Your new preset is now available in the Presets menu.

(iPhone) In the Edit panel in the Loupe view, tap Presets icon at the bottom of the screen.

(iPad) In the Loupe view, tap () icon at the right.

In the Presets pop-up menu, locate the user preset that you want to update or delete. Tap the three-dots () icon next to that user preset and choose any of the following options:

Update With Current Settings: In the Update Preset screen, modify the edit settings to include in the user preset as necessary.

Click the Select pop-up menu and choose any of the following options:

• All: Selects all the edit settings groups.
• Default: Selects the default set of edit settings. Tools, Optics, and Geometry settings are excluded by default.
• None: Deselects all the edit settings.

To manually select or deselect specific settings, tap the check box next to the edit setting groups. You can also tap the (>) icon to navigate within the edit setting group, and then choose specific settings from the submenu. For example, you can navigate within the Light settings group and then select/deselct any of the settings from the submenu - Exposure, Contrast, Highlights, Shadows, Whites, Blacks, Tone Curve.     

After modifying the required edit settings, tap Save at the upper-right corner.

Rename: In the Rename Preset screen, modify Preset Name as necessary.

After modifying the preset name, tap Save at the upper-right corner.

Delete: Choose this option to permanently delete the user preset from all synced devices.

(iPhone) In the Edit panel in the Loupe view, tap Presets icon at the bottom of the screen.

(iPad) In the Loupe view, tap () icon at the right.

Tap the three-dots () icon at the upper-right corner of the screen and choose Manage Presets.   

In the Manage Presets screen, switch on the preset groups that you want to show in the Presets menu. Switch off the preset groups that you want to hide from the Presets menu.

Tap Done at the upper-right corner.

Open a photo in Loupe view and in the Edit panel, tap Presets.

Tap the three-dots icon at the upper-right corner in the Presets panel to bring up the options menu. 

Tap Show Partially Incompatible to turn off. The partially incompatible presets are no longer visible in the Presets panel. 

(iPhone) In the Edit panel in the Loupe view, tap Light icon at the bottom of the screen to view the tone controls.

(iPad) In the Edit panel menu in the Loupe view, tap Light accordion.

(Optional) Tap Auto to set the overall tonal scale. Adobe Photoshop Lightroom for mobile automatically sets the sliders to maximize the tonal scale and minimize highlight and shadow.

Adjust the tone control sliders:

Sets the overall image brightness. Adjust the slider until the photo looks good and the image is the desired brightness.  

Increases or decreases image contrast, mainly affecting midtones. When you increase contrast, the middle-to-dark image areas become darker, and the middle-to-light image areas become lighter. The image tones are inversely affected as you decrease contrast.  

Adjusts bright image areas. Drag to the left to darken highlights and recover “blown out” highlight details. Drag to the right to brighten highlights.

Adjusts dark image areas. Drag to the left to darken shadows. Drag to the right to brighten shadows and recover shadow details.

Adjusts white clipping. Drag to the left to reduce clipping in highlights. Drag to the right to increase highlight clipping. (Increased clipping may be desirable for specular highlights, such as metallic surfaces.)

Adjusts black clipping. Drag to the left to increase black clipping (map more shadows to pure black). Drag to the right to reduce shadow clipping.

(iPhone) In the Edit panel in the Loupe view, tap Effects icon at the bottom of the screen to view the controls.

(iPad) In the Edit panel menu in the Loupe view, tap Effects accordion.

Adjust the effects sliders:

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.

Adds depth to an image by increasing local contrast. To maximize the effect, increase the setting until you see halos near the edge details of the image, and then reduce the setting slightly.

When using this setting, it is best to zoom in to 100% or greater. To zoom in, double-tap the photo or use the outward spread gesture.

Controls the amount of haze in a photograph. Drag to the right to remove haze; drag to the left to add haze.

Applies a dark or light vignette for artistic effect to a photo. Negative values darken the corners of the photo. Positive values lighten the corners.

For related useful information, see Vignette, grain, and dehaze effects.

Adds realistic film-grain effect to your photos. Drag the slider to the right to add grain. When you add grain, you can also control the grain size and roughness using the Size and Roughness sliders respectively.  

(iPhone) In the Edit panel in the Loupe view, tap Detail icon at the bottom of the screen.

(iPad) In the Edit panel menu in the Loupe view, tap Detail accordion.

For detailed information about the available slider controls, see Sharpening and noise reduction.

(iPhone) In the Edit panel in the Loupe view, tap Optics icon at the bottom of the screen.

(iPad) In the Edit panel menu in the Loupe view, tap Optics accordion.

Chromatic aberration appears as a color fringe along the edges of objects. It is caused by the failure of the lens to focus different colors to the same spot, aberrations in sensor microlenses, and by flare.

Chromatic Aberration: Turn on to automatically correct blue-yellow and red-green fringes in your image.  

Camera lenses can exhibit different types of defects at certain focal lengths, f-stops, and focus distances.  

Enable Lens Correction: Turn on to apply lens correction on your photo.

Select a photo with skewed geometry.

(Recommended) In the Optics panel, enable the Lens Profile Corrections option.

(iPhone) In the Edit panel in the Loupe view, tap Geometry icon at the bottom of the screen.

(iPad) In the Edit panel menu in the Loupe view, tap Geometry accordion.

From the Upright menu, choose an option to apply the correction to the photo:

• Guided: Allows you to draw two to four guides on your photo to adjust perspective.
• Auto: Corrects both vertical and horizontal perspective while balancing the overall image, preserving as much of the visible image area as possible.
• Level: Corrects horizontal perspective, making horizontal lines parallel in the photo.
• Vertical: Corrects vertical perspective caused by tilting the camera up or down. Makes vertical lines parallel in the photo.
• Full: Combines Auto, Level, and Vertical upright modes to automatically correct perspective.
  

Cycle through the Upright modes until you find the most preferable setting.

All the Upright modes correct distortion and perspective errors. The best setting varies from one photo to another. Experiment with the modes before deciding on the best possible mode for your photo.

Guided Upright mode

If you chose the Guided Upright mode, do the following:

(Optional) While correcting the perspective of your photo, you may get white areas near the image boundaries. To remove the white area, enable the Constrain Crop option, which automatically crops the photo according to the original dimension.

Use the geometry sliders to fine-tune the perspective corrections - Distortion, Vertical, Horizontal, Rotate, Aspect, Scale, X Offset, Y Offset.

• Distortion: Corrects lens barrel distortion (straight lines appearing to bow outward) and pincushion distortion (straight lines appearing to bend inward). Move the slider to the right to correct barrel distortion in your photo; move the slider to the right to correct pincushion distortion.
• Vertical: Makes vertical lines in an image parallel. If the vertical lines are diverging at the bottom edge, move the slider to the left to push the pixels away from that edge; if the vertical lines are diverging at the top edge, move the slider to the right to push the pixels away from that edge.
• Horizontal: Makes horizontal lines in an image parallel. Move the slider to the left to push the pixels away from the right edge; move the slider to the right to push the pixels away from the left edge.
• Rotate: Rotates the image to correct for camera tilt. Move the slider to the left to rotate the image anti-clockwise; move the slider to the right to rotate the image clockwise.
• Aspect: Move the slider to the left to widen the perspective of the photo; move the slider to the right to narrow the perspective of the photo.
• Scale: Adjusts the photo scale up or down while maintaining the aspect ratio. Move the slider to the left to scale down; move the slider to the right to scale up.
• X Offset: Move the slider to the left to shift the image pixels toward left on the x-axis, leaving a white area at the right edge; move the slider to the right to shift the image pixels toward right on the x-axis, leaving a white area at the left edge.
• Y Offset: Move the slider to the left to shift the image pixels downward on the y-axis, leaving a white area at the top edge; move the slider to the right to shift the image pixels upward on the y-axis, leaving a white area at the bottom edge.
  

Open a photo in Loupe view.

Tap the three-dots () icon in the upper-right corner and choose Copy Settings.

In the Copy Settings panel, select the edits that you want to copy. You can select edit setting groups such as Profile: Color, Tools, Light, among others. Optionally, tap the Select drop-down list to choose one of the following:

• All: Selects all the edit settings groups.
• Modified: Selects only the edits settings that you've modified or applied on the selected photo.
• Default: Selects the default set of edit settings. Tools and Geometry settings are excluded by default.
• None: Deselects all the edit settings.

You can also choose to select or deselect specific settings in each edit setting group. Tap the arrow icon against each edit setting group to view its specific settings.

After making the selections, tap the  icon.

In the grid view of All Photos or a desired album, select the photo(s) to which you want to paste the copied settings to.

Tap Paste in the bottom panel.

In the Paste Settings confirmation dialog box that appears, tap Apply.

The copied settings are then applied to the selected photos.

Open a photo in Edit view and apply the desired edits.

Scroll the bottom panel and tap Versions.

You can view the Original which is the photo you imported. If you have made any edits to the photo, you can view those edits under the Current section. To save the current edits as a Version, tap Create Version.

Enter the name for the Version and tap Create. This way, you can apply different edits and save them as Versions.

Select a Version and tap the three-dot icon to rename or delete it.

In the Lightroom app on the iPad, select the desired photo and tap the Share icon.

Select Edit in Photoshop.

Make your edits in Photoshop on the iPad.

To bring the photo back to Lightroom, select Send to Lightroom in the top panel.