KarstenG
Active Member
- Joined
- Jul 24, 2013
- Messages
- 131
- Location
- Regensburg, Germany
- Lightroom Experience
- Advanced
- Lightroom Version
- Classic
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:
Special thanks go to @John R Ellis for providing the code that mimics a rectangular crop while rotating a photo and preserving its aspect ratio. This is something that Lightroom’s Crop & Straighten Tool can do, but the SDK cannot.
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:
Special thanks go to @John R Ellis for providing the code that mimics a rectangular crop while rotating a photo and preserving its aspect ratio. This is something that Lightroom’s Crop & Straighten Tool can do, but the SDK cannot.
