![]() ![]() Also not included are localized corrections, Upright and Crop adjustments. Lens warp, vignette, and chromatic aberration are applied to the images behind the scenes before stitching, so such settings in the source images will not be copied over to the resulting panorama DNG. ![]() Ideally, the exposure setting should be consistent, but even if the photos are captured with a variance of exposure, the Photo Merge process can even these out to a certain extent. But you can also get good results shooting handheld. It helps if you have the camera mounted on a tripod when you capture these better yet, use a special tripod head that allows you to align the nodal point of the lens to the rotation axis. There should be at least 25% overlap, or more if shooting with a wide-angle lens. When photographing such a sequence, it helps to have a decent overlap between each capture. To create a regular Photo Merge panorama, you first need to select a series of photographs that, when stitched together, will make up a panoramic view. For optimum alignment, it is best to carry out the HDR Photo Merge first and then apply the panorama Photo Merge after. However, the file size can end up being really huge if you adopt this approach, and it may take a long time to carry out all the processing. Since you have the ability to use Photo Merge to create HDR DNGs, you can also produce panoramas made up of HDR DNG files. Therefore, being able to preserve the raw data when using the Photo Merge feature in Lightroom allows you to avoid this problem completely, maintain full control over the tones, and avoid undesired clipping. You could carefully set the highlight end points at the pre-Photomerge stage, only to find them clipped in the resulting Photomerge composite. One of the things I had noticed with the conventional Photoshop Photomerge workflow is how the Photomerge processing would often cause the highlight values to clip. Although the images are partially processed, you still retain the ability to apply Develop module edits and update to later process versions as they become available. Like the HDR DNGs, these are demosaiced DNGs saved as raw linear RGB data (see Figure 4.37). ![]() The resulting files are 16-bit integer DNGs. You can also use the Photo Merge feature to create DNG panoramas from raw as well as non-raw files. ![]()
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