vignette
A vignette is the darkening at the edge of a photo caused by limitations of real lenses. This effect can be simulated by Bokeh for artistic effect or to get the same look found in low-end Lomo cameras. The results can be subtle or obvious as in the photographs below.
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The Baby Boy Blue preset was applied to a rough selection.
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The Girlie Pink preset was applied using Bokeh’s radial sweet spot tool.
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A dark vignette typical of a Lomo camera was applied to this shot.
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