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Gregory RichardandClaude Opus 5.5 638cd35813 feat: lens, halation and film grain nodes

Three finishing nodes that make generated images read more like photographs:
Lens (vignette and lateral colour fringes), Halation (light spreading from
bright areas, neutral to film red-orange) and Film Grain (strongest in the
midtones, mostly luminance, own grain size, seeded). Tests stub comfy_api;
the publish workflow releases to the Comfy Registry after they pass.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-11-04 23:12:48 +01:00

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ComfyUI-Realism

Finishing nodes that make generated images read more like photographs.

A typical order is Lens → Halation → (LUT) → Film Grain: lens effects happen before the light reaches the film or sensor, grain is on top.

Lens (realistic)

vignette: corners darker by this fraction (0.15 = 15%), smooth falloff from the centre
aberration: lateral chromatic aberration, the colour fringe width in pixels at the corners; zero in the centre, growing outwards

Halation (realistic)

Light from bright areas spreads into its surroundings.

threshold: brightness from which on light spreads
radius: spread in percent of the long image side
warmth: 0 = neutral lens bloom, 1 = the red-orange halation of film
strength: how much of the glow is added (screen blend)

Film Grain (realistic)

Grain the way film and camera sensors show it:

strongest in the midtones, weaker in deep shadows and bright highlights (shadows, highlights)
mostly luminance with a little colour (color)
its own grain size in pixels (size), independent of the image size
reproducible with seed

strength 1.0 adds noise with a 10% standard deviation in the midtones. For photos, 0.2–0.4 is a good range.

Install

Clone or link this folder into ComfyUI/custom_nodes and restart ComfyUI. No extra requirements.