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Chromatic Aberration

Chromatic Aberration
Filter

Simulates lens chromatic aberration by shifting RGB channels apart, with radial vignette-style falloff or uniform directional shift.

Chromatic Aberration separates the red, green, and blue channels of an image to recreate the color fringing that real lenses produce. Two modes are available: Radial disperses channels outward from a center point so fringing grows toward the edges (like a wide-angle lens), while Uniform shifts channels at a fixed angle across the entire frame.

In Radial mode, Size controls how much of the center stays clean, Softness controls the falloff gradient, and Center X/Y move the focal point. In Uniform mode, Angle sets the shift direction. Strength controls the overall magnitude of the channel separation in both modes.

Parameters

Section titled “Parameters”

Effect

ModeChoice
Default: Radial

Radial: dispersion increases toward edges. Uniform

  • RadialChannel dispersion increases from center to edges, simulating real lens vignette-style chromatic aberration.
  • UniformConstant channel shift across the entire image at a fixed angle, for glitch or analog video looks.
MethodChoice
Default: 1 Range: Shift / Smear

Shift: sharp single-sample channel separation. Smear: directional blur along the displacement

StrengthNumber
Default: 5.0 Range: 0.0–50.0

Channel separation magnitude in pixels

AngleNumber
Default: 0 Range: 0–360

Direction of the uniform channel shift (Uniform mode only)

Falloff

Size (%)Number
Default: 80 Range: 0–200

Size of the unaffected center region (Radial mode only)

Softness (%)Number
Default: 60 Range: 0–100

Width of the falloff gradient (Radial mode only)

Center XNumber
Default: 0.00 Range: -1.00–1.00

Horizontal center offset (Radial mode only)

Center YNumber
Default: 0.00 Range: -1.00–1.00

Vertical center offset (Radial mode only)

Usage Tips

Section titled “Usage Tips”
  • Radial mode at low strength (2-5 px) adds subtle lens character without looking like an error.
  • Use Uniform mode with a diagonal angle for a glitch or analog video aesthetic.
  • Switch Method to Shift for sharp, hard-edged channel separation. Smear (the default) blurs along the displacement for a softer, more organic lens look.
  • Combine with Film Grain and Vignette for a complete analog lens simulation.
  • Move Center X/Y off-center in Radial mode to match real-world off-axis aberration.
Section titled “Related Nodes”