Straightening perspective lines in Photoshop is effectively done using the Perspective Warp feature and its automatic alignment options.
Utilizing the automatic buttons in the Options Bar while in **Warp** mode is the quickest way to correct perspective issues.
## Using Perspective Warp's Automatic Alignment
Photoshop's Perspective Warp tool is designed specifically for adjusting the perspective of objects or scenes. It works in two stages: setting up the grid (Layout mode) and then manipulating the grid (Warp mode) or using automatic corrections.
Here's how you can use the automatic functions to straighten your perspective lines:
1. **Apply Perspective Warp:** Select the layer you want to correct. Go to `Edit > Perspective Warp`.
2. **Set Up the Grid (Layout Mode):** Draw quads (grids) over the planes in your image that you want to correct. Align the edges of these quads with the perspective lines in your scene (like walls, floors, or objects). This is done in the default **Layout** mode.
3. **Switch to Warp Mode:** Once your grid is set up, look at the **Options Bar** at the top of the screen. Click on the **Warp** button to switch from **Layout** mode to **Warp** mode.
4. **Use Automatic Straightening Buttons:** While in **Warp** mode, the **Options Bar** provides automatic correction buttons. You can **use the automatic buttons in the options bar to level the horizontal lines in your grid, straighten the vertical lines**, or do both at once.
* **Level Horizontal:** Corrects converging horizontal lines.
* **Straighten Vertical:** Corrects converging vertical lines.
* **Straighten Both:** Applies both horizontal and vertical corrections simultaneously.
By simply clicking these buttons, Photoshop automatically adjusts the perspective grid to make the selected lines horizontal or vertical, thereby straightening the perceived perspective in your image.
## Summary of Modes and Actions
| Mode | Purpose | Key Actions in Options Bar |
| :------ | :--------------------------- | :---------------------------------------- |
| **Layout** | Define and position perspective planes | Drawing quads, aligning grid edges |
| **Warp** | Adjust perspective planes | Dragging grid points, **Automatic Buttons** |
Using the automatic buttons in **Warp** mode streamlines the process of getting a fundamentally corrected perspective before making any fine manual adjustments.
