Create panoramas

Select File > Open and select the source DNG images. The images then open in the Camera Raw dialog box.

In the Camera Raw dialog box, select the images that you want to merge in the Filmstrip panel on the left. To select all the images in the Filmstrip panel, press Ctrl (Win) / Control (Mac) + A.

In the Filmstrip panel, click  icon or right-click the panel and do one of the following:

• For standard exposure photos, select Merge to Panorama or press Ctrl (Win) / Control (Mac) + M to merge them into a panorama.
• For exposure bracketed photos, select Merge to HDR Panorama to merge them into an HDR panorama. Single-step HDR Panorama merge does not work with Smart Preview.

You can then view a progress bar of the merging images to create the panorama preview.

In the Panorama Merge Preview / HDR Panorama Merge Preview dialog box, you can choose a layout projection manually:

Spherical: Aligns and transforms the images as if they are mapped to the inside of a sphere. This projection mode is great for very wide or multirow panoramas.

Cylindrical: Projects the panorama as if it is mapped to the inside of a cylinder. This projection mode works really well for wide panoramas, but it also keeps vertical lines straight.

Perspective: Projects the panorama as if it is mapped to a flat surface. Since this mode keeps straight lines straight, it is great for architectural photography. Very wide panoramas may not work well with this mode due to excessive distortion near the edges of the resulting panorama.

You can use Boundary Warp slider setting (0-100) to warp panoramas/HDR panoramas to fill the canvas. Use this setting to preserve image content near the boundary of the merged image, that can otherwise be lost due to cropping. The slider controls how much Boundary Warp to apply.

A higher slider value causes the boundary of the panorama to fit closer to the surrounding rectangular frame.

While you preview the panorama, ensure that the Auto Crop setting is selected to remove undesired areas of transparency around the merged image. You can also view the total number of merged images in the Panorama Merge Preview / HDR Panorama Merge Preview dialog box.

Once you've applied your desired settings, click Merge in the preview dialog box.

In the Merge Result dialog box, you can enter the location and File name and click Save. Alternatively, Alt-click Merge to save the panorama in the same folder as the source image with the default file name.