Chromatic Aberration Node

The Chromatic Aberration node simulates the dispersion of light caused by a camera lens, where different wavelengths (colors) of light are refracted by slightly different amounts. This effect produces subtle color fringing near edges or high-contrast transitions and can be used for both realistic lens simulation and stylistic distortion effects.

It can also be combined with other post-processing effects such as Vignette or Lens Distortion to create convincing camera imperfections.

Inputs

Image

Standard color input image.

Type

Defines the method used to generate the chromatic aberration effect.

Offset:

Offsets individual color channels along the X or Y axis. A simple and fast way to create horizontal or vertical color fringing.

Scale:

Scales each color channel differently from the image center, creating a radial dispersion effect.

Directional Blur:

Blurs color channels along a specific direction to simulate motion-like chromatic smearing.

Lens Dispersion:

Simulates wavelength-dependent refraction through a lens, creating realistic radial rainbow edges near the image borders.

Axis Offset

Determines the axis along which channel offsets occur.

Vertical:

Applies offsets vertically.

Horizontal:

Applies offsets horizontally.

Factor

Controls the intensity of the aberration. Higher values increase the separation between color channels and make the effect more visible.

Center Directional Blur

The pivot point around which directional transformations occur. Defined in normalized coordinates (0.0-1.0 across the image).

Samples Directional Blur

Sets the number of samples used to compute the directional blur. More samples produce a smoother result but increase computation time. The number of samples is 2ⁿ, growing exponentially with this input.

Fit Lens Dispersion

Scales the resulting image to fit entirely within the frame, avoiding empty borders caused by radial dispersion.

Outputs

Image

The resulting image with chromatic aberration applied.