The photography lessons below are taken from my presentations. I hope you find them helpful.
The ability to change the perspective of an image is a powerful feature of image editing software like Adobe Lightroom or Photoshop. Many photographers use the vertical perspective transformation for making converging lines become parallel, correcting the distortion that appears when the camera is pointed upward at a building. But this type of perspective transformation can also be used to add convergence or even recover the visualization you were unable to achieve in the field. In this lesson, I will describe how to alter the perspective to get a more emotive angle on a trailing fence — an effect I visualized in the field but couldn’t achieve because a large wood pile blocked the location I needed for capturing the image. The result of the transformation is not exactly what I visualized but is closer to the ideal than my raw image. … [more]