The Develop module contains two sets of panels and a toolbar for viewing and editing a photo. On the left are the Navigator, Presets, Snapshots, History, and Collections panels for previewing, saving, and selecting changes you've made to a photo. On the right are the tools and panels for making global and local adjustments to a photo. The toolbar contains controls for tasks such as changing between Before and After views, playing an impromptu slideshow, and zooming.

A. Presets, Snapshots, History, and Collections panels B. Toolbar C. Histogram D. Photo information E. Smart Preview Status F. Tool strip G. Adjustment panels
- The Histogram panel in the Develop module allows you to measure color tones as well as make tonal adjustments to the photo.
- Additional information about the Smart Preview status of the photograph is displayed below the histogram/EXIF information/RGB values.
- The tools in the tool strip let you fix red eye, remove dust and spots, crop and straighten photos, and apply adjustments to specific areas of a photo.
- The Basic panel contains the main tools for adjusting the photo's white balance, color saturation, and tonal scale.
- The Tone Curve and HSL/Color/B&W panels contain tools for fine-tuning your color and tonal adjustments.
- The Color Grading panel colors monochrome images or creates special effects with color images.
- The Detail panel lets you adjust sharpness and reduce noise.
- The Lens Corrections panel lets you correct chromatic aberration and lens vignetting caused by the camera lens.
- The Transform panel lets you correct the horizontal and vertical distortions.
- The Effects panel lets you apply a vignette to a cropped photo, add a film-grain effect, or adjust the amount of haze or fog in a photograph.
- The Calibration panel makes adjustments to the default calibration settings for your camera.
You can drag the Develop panels on the right of the workspace in the order you would like to see them in your custom Develop panel menu. You can also choose to show or hide the panels as required.
Reference View in the Develop module provides a dedicated 2-Up view which lets you place a Reference (static) photo next to an Active (editable) photo. This view is useful when you want to edit a photo to make it look like a different, reference photo. Here are some examples:
- Matching the look of a photo for preset creation.
- Determining the white balance consistency in photos.
- Balancing the image attributes across photos that you want to use together in a layout or presentation.
- Fine-tuning the applied camera matching profiles to the look of camera-generated JPG files.
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You can launch Reference View from the Develop module and the Library module.
To launch Reference View from the Library module:
- In the Grid view or Loupe view, select the photo you want to edit.
- Do any of the following:
- From the menu bar, select Photo > Open in Reference View or press Shift+R keys.
- Right-click a photo and choose Open in Reference View from the context menu.
- From the menu bar, select Photo > Open in Reference View or press Shift+R keys.
To launch Reference View from the Develop module, do the following:
- With a photo selected, click
icon located in the toolbar.
Reference View in the Develop module; photo to be edited in the Active window.
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- In Reference View, drag-and-drop a photo from the Filmstrip onto the Reference window to set it as the reference photo.
You can also set a reference photo from the grid in the Library module or the Loupe view in the Develop module by right-clicking a photo and choosing Set As Reference Photo from the context menu.
Reference view showing Reference photo in the Reference window on the left and the photo to be edited in the Active window on the right.
To change the Reference Photo while in Reference View, do any of the following:
- Right-click a photo in the Filmstrip and select Set As Reference Photo from the context menu.
- Drag-and-drop a new photo to the Reference window.
- Switch to the Library module, right-click a photo in the grid, and select Set As Reference Photo from the context menu.
By default, Reference View displays the Reference photo and the Active photo side by side on the screen. To switch to the display to Top/Bottom in Reference View, do any of the following:
- Click the
icon located in the toolbar to toggle between Reference View - Left/Right and Reference View - Top/Bottom display.
- Choose Reference View - Top/Bottom option from the pop-up menu.
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Using the tools and panels on the right, you can now work on editing the Active photo to visually match its characteristics and looks with the Reference photo.
To see a Before view of your Active photo while editing your photo in Reference View, press '\' key. Lightroom Classic displays the previous version of your photo in the Active window. The word "Active (Before)" appears in the upper-left corner of the Active window.
Apply develop setting on the Active photo (right) to visually match its characteristics and looks with the Reference photo (left).
Note:
While in Reference View, you can use all the develop tools to edit your Active photo — except the Crop tool. Apply most of the local edits to your photo including crop, before you launch Reference View.
When you select the Crop tool, Lightroom Classic displays the Selecting the Crop tool will exit Reference View dialog. You can click Continue to exit. Otherwise, click Cancel to remain in Reference View.
To change the Active Photo while in Reference View, do any one of the following:
- Select a different photo in the Filmstrip
- Drag a new photo to the Active window.
- Click the Reference Photo lock icon
in the toolbar, switch to the Library module, select a new photo, and then choose Photo > Open in Reference View from the menu bar.
Note:
By default, Lightroom Classic clears the current Reference photo when you switch away from the Develop module to any other module. To lock the current Reference photo to the Reference window, click the Reference Photo lock icon
in the toolbar before switching away from the Develop module.
While working in the Reference View in the Develop module, the area under the Histogram displays the RGB/LAB color values for individual pixels appearing under the Hand or Zoom tool when you move it over the Reference/Active photo:
Reference/Active R [Reference value]/[Active value] G [Reference value]/[Active value] B [Reference value]/[Active value] %
You can refer to these color values while adjusting the tone and color of your Active image. For details, see View RGB and LAB color values in Reference View.
While working in Reference View, you can also apply selected Develop settings of the current Active photo across multiple photos. See Apply develop adjustments across multiple photos in Reference View.
You can compare two versions of a photo as you apply Develop settings to it. The Before view first displays the photo as it was originally imported, including any presets that were applied. The photo remains unchanged unless you copy settings to it. The After view shows changes as you make them. Zooming and panning are synchronized in the two views.
- To switch the Before and After views one at a time in Loupe view, press the backslash (\ ) key or choose View > Before/After > Before Only. The word "Before" appears in the lower-right of the image.
- To display the Before and After photos in two views together, click the Before And After Views button in the toolbar to toggle through the choices or choose an option from the pop-up menu.
Before/After Left/Right:
Displays two whole versions of the photo in two views, side by side on the screen.
Before/After Left/Right Split:
Displays two halves of the photo split into two views, side by side on the screen.
Before/After Top/Bottom:
Displays two whole versions of the photo in two views, one on top of the other.
Before/After Top/Bottom Split:
Displays two halves of the photo split into two views, one on top of the other.
When you are working in a Before and After view of your photo, you can apply the settings of one version to the other, and vice versa.
- In the toolbar, click the Copy Settings From The Before Photo To The After Photo button.
- In the toolbar, click the Copy Settings From The After Photo To The Before Photo button.
- Click Swap Before And After Settings.
- Choose Settings > Copy After's Settings To Before.
- Choose Settings > Copy Before's Settings To After.
- Choose Settings > Swap Before And After Settings.
Note:
These menu commands are also available when you're viewing Before and After versions of your photo in Loupe view.
All of the current settings for one version are copied to the other version. To copy a single history setting, right-click (Windows) or Control-click (Mac OS) a state in the History panel and choose Copy History Step Settings To Before.
Tools for performing local edits to specific areas of a photo are located in the tool strip under the Histogram panel. Select any tool to display its options in the tool drawer. Deselect the tool to close the drawer and revert to the Hand or Zoom tool.
Crop Overlay
Includes the Crop Overlay tool, Crop Frame tool, Aspect Ratio Lock button and options, Straighten tool, and Straighten slider.
Spot Removal
Includes Clone or Heal options and the Size slider. Click Reset to clear the changes to the photo.
Red Eye Correction
Includes Pupil Size and Darken sliders. Click Reset to clear the changes to the photo.
Adjustment Brush
Includes options for brushing Exposure, Clarity, Brightness, and other tonal adjustments on specific areas of a photo.
Hand/Zoom tool
When you hold the pointer over the photo, R, G, and B color values display under the Histogram. The tool that appears changes depending on your view. The Zoom tool is selected if the magnification is Fit. The Hand tool is selected if the magnification is Fill, 1:1, or higher. Click the photo to toggle between Fit and 1:1.
White Balance Selector
Click this tool in the Basic panel, choose it from the View menu, or press W to select it. Options appear in the toolbar.
Targeted Adjustment
Lets you adjust certain color and tone sliders by dragging the tool in the photo. Select it in the Tone Curve or HSL/Color/B&W panels, or choose it from the View menu. Once the tool is selected, you can choose different targets from the Target Group pop-up menu in the toolbar.
Loupe View
Although this single-photo view is available in both the Develop and Library modules, the keyboard shortcut for Loupe view in the Develop module (the D key) is different from the keyboard shortcut in the Library module (the E key). The Loupe View button, located in the toolbar, lets you quickly switch to Loupe view in each module.
Copy and Paste
These buttons at the bottom of the left panels let you copy or paste the current settings to a selected photo.
Previous, Sync, and Auto Sync
These buttons at the bottom of the right panels toggle according to whether you have one or more photos selected in the Filmstrip. If only one photo is selected, the Previous button lets you copy and paste all of the settings of the previously selected photo to the currently selected photo on the Filmstrip. If multiple files are selected, the Sync button lets you choose which of the current settings to paste from the currently selected photo onto the other selected photos. Auto Sync adjusts other selected photos automatically after each slider is moved. Press Ctrl (Windows) or Command (Mac OS) to turn the Sync button into the Auto Sync button.
Before and After views
The Before And After Views button in the toolbar offers four choices. You can arrange two photo views side by side or top to bottom, display the whole photo in both views, or split the photo in two. Click the Loupe View button to turn off Before and After views.
Copy settings
These three buttons let you copy and paste the current settings from the After view to the Before view, from the Before view to the After view, or swap between the views. They appear in the toolbar when you have selected the Before and After view in the Develop module.
Click the tool or choose it from the Tools menu. To deselect a tool, click it, click Done, or select or a different tool.
A set of default presets is listed in the Presets panel of the Develop module. Click the Lightroom Classic Presets folder to display the default presets.
- To preview the effects of a preset on your photo, move the pointer over it in the Presets panel. The effect is displayed on your photo in the Loupe view and in the Navigator panel.
- To apply a preset to the photo, click it in the Presets panel.
Note:
In Lightroom Classic CC 7.4 (June 2018 release), a new preference option has been added that allows you to disable the live preset preview on your photo in the Loupe view.
- Choose Edit > Preferences (Win) or Lightroom Classic > Preferences (Mac).
- In the Preferences dialog, go the Performance tab.
- In the Performance tab, deselect Enable Hover Preview Of Preset In Loupe.
- Click OK.
Note:
Beginning with Lightroom Classic CC 7.5 (August 2018 release), you can also bulk import XMP presets and profiles, DCP profiles, and LCP profiles as part of a zip file. However, .lrtemplate presets can't be imported as part of a zip file.
- In the Presets panel [Develop module], click the plus (+) icon at the upper-right corner and choose Import Presets from the displayed drop-down options. In the import dialog box that appears, select the preset files or a .zip file containing presets. Click OK.
In this case, all the presets are added to the User Presets group.
- In the Presets panel [Develop module], right-click on the desired preset group and in the import dialog box that appears, select the preset files or a .zip file containing presets. Click OK.
In this case, the presets are imported into the selected preset group.
Introduced in Lightroom Classic CC 7.4 (June 2018 release)
Using the Manage Presets option, you can show or hide various Develop preset groups that are displayed in the Presets panel and other places where the Develop presets list appears.
To show/hide preset groups, follow the steps below:
Create a preset based on the ISO setting of your images. To create an ISO adaptive preset, you need to select two or more images with different ISO values. If you apply the ISO adaptive preset to an image that has a different ISO value than the one specified in the preset, then the appropriate value of the setting is calculated based on the values defined in the preset.
For example, if you create a preset using two images, one with ISO 400 and Luminance Noise Reduction set to 0 and other with ISO 1600 and Luminance Noise Reduction set to 10, and apply this preset to an image with ISO 800, the Luminance Noise Reduction will be set to 5.
To set an ISO adaptive preset as the default setting for importing raw file format images, see Set raw defaults specific to ISO values.
Note:
The Create ISO adaptive preset option will be disabled if:
- You have not selected two or more images.
- The selected images do not have different ISO values.
You cannot export built-in Lightroom Classic presets or preset groups. You can export only custom presets.
Note:
- To export all the presets in a group, right-click (Windows) or Control-click (Mac OS) the preset group and choose Export Group.
- If there are custom/third-party presets as well as built-in Lightroom Classic presets in the Favorite group, then only custom/third-party presets are exported on exporting the Favorite group.
Note:
Do not press the Delete key on your keyboard; this deletes the currently selected photo.
By default, custom (user) presets are stored in a folder in the Lightroom Classic folder. For the specific locations on Mac OS and Windows, see Preference file and other file locations in Lightroom Classic and Lightroom 6.
- To store user presets in a folder with the catalog, in the Presets panel of the Preferences dialog box, select Store Presets With Catalog.
- To see where a user preset is located, right-click (Windows) or Control-click (Mac OS) it in the Presets panel of the Develop module and choose Show In Explorer (Windows) or Show In Finder (Mac OS).
On opening a photo in the Loupe view in the Develop module, some presets may not appear in the Presets panel due to incompatibility with the selected photo, such as camera profiles that are not applicable to the current photo or presets that only apply to raw files. The non-compatible presets are shown as faded and in Italics style in the Presets panel in Develop.
To see all presets even if they are not compatible with the current photo, do the following:
With this release of Lightroom Classic, if you attempt to create a duplicate preset with the same name under the same group, a Duplicate Preset Name dialog box opens with options to:
- Replace - Select this option to keep only the latest preset with the same name in the group
- Duplicate - Select this option to keep two presets with the same name listed in the same group
- Rename - Select this option to append a numeric extension to the name by default or rename it yourself
Lightroom Classic provides several ways to undo, or reset, adjustments you make to photos as you're working in the Develop module.
Note:
Save a snapshot or preset of your settings before undoing them so that you don't completely lose the settings.
- Click the Reset button to revert back to the Lightroom Classic default settings.
- Click the General - Zeroed preset in the Presets panel to remove all settings completely.
- Select an earlier version in the History panel or Snapshots panel that occurred before you applied the settings.
- Double-click individual slider controls to reset the sliders to zero.
- Choose Undo from the Edit menu. Lightroom Classic tracks each setting you make. You can undo all of them by choosing Undo multiple times.