Post-processing vignetting refers to the intentional darkening of the corners of an image during editing. This technique is often used to draw attention to the center of the photo, enhancing the overall composition. It can be applied using software like Adobe Lightroom or Photoshop, where sliders or filters adjust the brightness in specific areas. This effect mimics natural vignetting that occurs in photography due to lens characteristics or lighting conditions. While some photographers prefer to embrace natural vignetting, others may choose to enhance or correct it in post-processing to achieve a desired artistic look.