Compensate for lens vignetting in Camera Raw
Vignetting is a lens defect that causes the edges, especially the corners, of an image to be darker than the center. Use controls in the Lens Vignetting section of the Lens Correction tab to compensate for vignetting.
- Increase Amount to lighten the corners, or decrease Amount to darken them.
- Decrease Midpoint to apply the adjustment to a larger area away from the corners, or increase Midpoint to restrict the adjustment to an area closer to the corners.