Rotating and Straightening
You can straighten a crooked photo in Develop mode by rotating the photo at a custom angle.
You can save your settings as a preset for future use.
To Correct a Crooked Photo:
- In Develop mode, select the Geometry tab.
 - 
                                        
In the Rotate & Straighten group, adjust your image as described below.
 
Rotate Options
                                                 
                                             | 
                                            
                                                 Rotate left button  | 
                                            
                                                 Rotates image 90 degrees to the left.  | 
                                        
                                                 
                                             | 
                                            
                                                 Rotate right button  | 
                                            
                                                 Rotates image 90 degrees to the right.  | 
                                        
Straighten Options
| 
                                                 Slider  | 
                                            
                                                 Adjusts the horizontal angle of the image. Move the slider left or right until the image appears straightened.  | 
                                        |
                                                 
                                             | 
                                            
                                                 Straighten Tool  | 
                                            
                                                 Straightens the image. Use your cursor to draw a line along a crooked horizon. When you release the cursor, the Straighten tool automatically straightens the photo relative to the horizon you drew.  | 
                                        
Click the Show Grid button 
  to  display a grid over your image. This tool is useful when adjusting alignment in your images.