Tried to put a screen video together: https://sojujo.smugmug.com/Other/DxO-Forum/n-Cr7pHp/i-kZCxcfd/A The facade in the video also shows a part, which is not vertical (will of architect), so I had to use lines for the outside of the image. It’s not the average use case. But using the sliders sometimes just shows the problem that my camera was not exactly vertical in that moment which the needs my mouse to travel long distances between straightening and perspective tool. And the 4 point tool is simply unforeseeable for me.