Merging 3 photos to HDR fails/Does Not Finish

Hi ​@BaronZer, Thanks for reaching out to the Lightroom Classic Community Forum! Let's try a few things and see if we can figure out this photo merge. You can check out our HelpX article here: https://adobe.ly/4iK9Qoc.

1. Ensure that the three photos have a proper exposure bracket. For optimal HDR merging, the exposures should ideally be spaced out by 1.5 to 3 stops. If the exposures are not adequately spaced, consider capturing additional images with a wider range.

2. Select Photos Correctly: In Lightroom, select the three photos you wish to merge. You can do this by:

   • Command-clicking (macOS) or Control-clicking (Windows) the photos in the Photo Grid or filmstrip view.

3. Initiate the Merge: Go to the menu and select:

   • Photo > Photo Merge > HDR

   • Alternatively, you can press Command (macOS) / Ctrl (Windows) + Shift + H.

4. Adjust Merge Settings: In the HDR Merge Preview dialog:

   • Enable Auto Align if there was any slight camera movement.

   • Enable Auto Settings for a good starting point for the merged image.

   • Adjust the Deghost Amount if necessary to correct any ghosting artifacts (start with Low).

If none of these steps work for you, we can continue troubleshooting. I hope this helps! ^CH