Diopter is a plugin which adds optical effects (blur, distortion, coloration) on a layer. Choose a lens shape (a mask) among the in-built shapes or use another layer as Luma Matte. This lens may be transformed.

Apply different effects to the lens: fast blur, realistic blur, directional blur, trail, optical distortion, brightness, color, chromatic aberration.

The overall intensity of the effect can be controlled, it’s also possible to apply a blend mode : Screen, Add, Multiply.