Enable HDR editing mode
Open the HDR photo you want to edit.
Select the Edit tool in the feature toolbar.
Select Light .
Scroll down and toggle on the Edit in HDR mode toggle.
After enabling HDR mode, you can adjust exposure, highlights, shadows, and other tone controls with real-time visualization of HDR levels. The HDR histogram appears at the top-right corner of the screen, showing the distribution of tones from the darkest shadows to the brightest highlights. If your photo doesn't contain HDR data, the HDR portion of the histogram remains hidden.
Use two fingers to drag the Exposure slider to see real-time visualization for exposure levels across the full dynamic range.
If the HDR section in the histogram displays in red, your device isn't compatible with HDR editing. Select the Info and rating icon at the lower-right of the histogram for device compatibility details.
To enable HDR editing by default for all new photos, select the More menu, select App settings > Import, then turn on the HDR edit mode for new photos toggle under HDR Edit Setting.
View HDR range visualization
The Visualize HDR toggle displays a color-coded overlay showing different HDR brightness ranges in f-stop increments. This helps you identify which areas of your photo are using extended HDR range beyond standard dynamic range.
With Edit in HDR mode enabled, select the HDR logo to open the HDR histogram panel.
Enable the Visualize HDR toggle to display color-coded HDR range indicators in your photo.
Adjust your edits while viewing the visualization to control how brightness is distributed across the HDR range.
Switch off the toggle when you're ready to view your photo without the overlay.
Color space options
Lightroom on iOS supports three HDR color spaces during editing and export: HDR sRGB (Rec. 709), HDR P3, and HDR Rec. 2020. These are HDR-enabled versions of standard color spaces, with HDR sRGB offering the smallest color gamut and HDR Rec. 2020 the largest. The app automatically manages color space handling during editing and export.