Darken a photo's edges
A vignette pulls the eye to the center — a smooth radial darkening you control.
Tools used in this guide
The job
Lens vignetting is usually a flaw to remove, but added deliberately it frames the subject and hides busy corners. The tool multiplies each pixel by a smooth radial falloff.
Strength and feather
Strength sets how dark the corners go; the inner/outer radii control where the falloff begins and where it reaches full strength — push the outer radius past 100 % and the center of a wide image stays clear while edges ease to black.
Worked example
A portrait at 40 % strength, 60 % feather: the center stays untouched and the corners ease toward black — like a soft studio backdrop without re-shooting.
Where it stops
A radial symmetric effect only — it can't follow an off-center subject elliptically. Static images ≤ 25 MiB / 40 MP; same format out as in.