Vignetting is a common issue with many lenses, especially at wide apertures. Lightroom has two methods to tackle correcting or reducing it.
Lens Corrections Panel
Features of the Lens Correction panel in Lightroom's Develop Module. The panel includes corrections for optical flaws such as chromatic aberration, lens vignetting, and distortion.
Chromatic aberration like purple fringe is something you don’t want in your photos. Here’s how to remove it in Lightroom.