p.1 #1 · LrC "Focus-Points" plugin straightens images by applying camera roll angle compensation
Version 3.3 of the Focus-Points plugin introduces a new feature that straightens images by compensating for the roll angle if the camera was tilted when the photo was taken. This method can be applied to individual images or selections.
The plugin generally produces better and more reliable results when correcting levels than Lightroom's Auto Transform feature. This is because it responds directly to horizontal camera imbalance, rather than looking for and using reference information, which is often absent or unreliable in wildlife, sports and action shots.
Example: The photo has a roll angle of 2.5°. Applying a crop angle of -2.5° compensates for the tilt. Using the ‘Straighten Images’ tool produces the same result as entering the roll angle compensation manually in Lightroom’s ‘Crop & Straighten’ tool. You can then modify or even revert the compensation as desired.
For an example and a summary, see README, or for a full description, see User Manual.
p.1 #3 · LrC "Focus-Points" plugin straightens images by applying camera roll angle compensation
Great idea. Thinking out loud, I wonder if the EXIF-reported roll angle is before or after IBIS correction. If it's before correction then the reported roll angle would probably overstate the actual roll angle of the captured image, which ostensibly would cause over-adjustment for software that relies on this field. Have you done any experiments with this?
