Vignette in Photoshop
Create a new empty layer on top of the stack. Ctrl + Alt + Shift + N
Fill the layer with pure white. Shift + Backspace
Set the blend mode to “Multiply”. Alt + Shift + M
Apply the vignette filter to the new layer.
Filter >> Distort >> Lens Correction…
Mess with the “Amount” and “Midpoint” sliders in the “Vignette” section.
