Adobe Photoshop Lightroom is now Adobe Lightroom Classic CC, with the same functionality and features. If you're looking for the all-new photography service, check out Lightroom CC.

You can combine multiple photos into a stunning wide-angle panorama using Panorama Merge in Lightroom Classic CC, but it may result in uneven borders. You could crop out uneven borders with Auto Crop, but cropping often means losing important details of the full photo.

The Boundary Warp slider in Panorama Merge lets you preserve the entire image and solves the problem of uneven white borders.

Open Lightroom Classic CC on your desktop, and import the practice files provided on this page or your own photos that you've shot for a panorama. To learn more, see the tutorial Easily import photos.

In the Library module, select the sample photos you just imported (or your own pano shots). Then, go to Photo > Photo Merge > Panorama. 

The Panorama Merge Preview window will appear, where you can preview your image and complete the panorama options. For the sample photo, choose the Spherical projection option.

You'll see this panorama has uneven borders and unwanted white areas along the edges.

Check Auto Crop. Notice that it applies a neat rectangular crop that may result in a composition you like; but sometimes cropping forces you to remove parts of the full image that you'd rather keep.

Let's uncheck Auto Crop so you can see what Boundary Warp does instead.

Drag the Boundary Warp slider to the right until the white border around the panorama preview disappears. Boundary Warp stretches the edges of the image to neatly fill the frame, retaining the entire image.

Now you don't have to sacrifice any important details of this panorama scene! 

Click the Merge button to finish your panorama.

Learn more in the tutorial Merge photos for a panorama.