vignetting

/vɪnˈjɛtɪŋ/
noun
  1. The gradual darkening or fading of an image's edges compared to its center, often used as a photographic effect.
    • Some cameras naturally produce slight vignetting at wide apertures.
    • The photographer minimized vignetting by using a different lens.
    • Vignetting can add a dramatic focus to the center of a portrait.
adjective
  1. Describing an image or photograph that has darkened or faded edges.
    • The vignetting effect gave the old photo a nostalgic feel.
    • She preferred a vignetting look for her landscape shots.
    • The vignetting corners made the picture look like it was from another era.