by Julieanne Kost
Here are three more interesting Upright options/features:
1) When you apply an Upright mode to a file to correct perspective, Lightroom caches that information (there are a number of reasons for this including but not limited to speed, consistency, future versioning, etc.). This means that if you apply an Upright mode and then decide to check “Enable Profile Correction” (simply because you forgot to do this first), you will want to click the “Reanalyze” option. This will tell upright to forget about those stored corrections, redo its analysis of the image, and compute a new correction.
2) Upright will generally work better on raw files compared to non-raw files, because it can take advantage of more reliable metadata (e.g., focal length).
3) Rotated crops and manual perspective corrections on existing images will usually interfere with automated Upright corrections. For this reason, applying any of the Upright corrections will reset the crop and manual perspective adjustments (Horizontal, Vertical, Rotate, Scale, and Aspect controls). Resetting the crop has the benefit of showing the user the maximum amount of image area remaining after an Upright adjustment (of course the crop can then be re-adjusted). Resetting the manual options will yield a better correction. However, in case you have a workflow that requires maintaining manual perspective corrections, Option + (Mac) | Alt + (Win) when choosing an Upright mode will preserve those manual settings.