Mastering Lighting in Portraits: An ICLight Tutorial for ComfyUI
1. Workflow Overview

Purpose: Redirect lighting in realistic portraits using ICLight technology.
Core Models:
ChilloutMix-Ni
: Base photorealism modeliclight_sd15_fcon.safetensors
: ICLight-specific UNet for light control
2. Key Nodes
Node Name | Function | Installation |
---|---|---|
| Load ICLight control model | Download to |
| Inject lighting conditions | Bundled with ICLight plugin |
| Image-latent conversion | Built-in ComfyUI |
3. Workflow Structure
Input Phase:
Load image (e.g.,
untitled-11.jpg
)Convert to latent via
VAEEncode
Lighting Control:
Set light weight in
ICLightConditioning
(default=0.18215)Positive prompt:
"Masterpiece,8K,Highly Detailed portrait"
Generation:
KSampler
(30 steps, Euler Ancestral) renders final image
4. Input/Output
Inputs:
Image: 768x1024 recommended
Light intensity: Adjust via
ICLightConditioning
slider (0-1)
Output: Real-time preview in ComfyUI
5. Notes
Dependencies:
Required model:
iclight_sd15_fcon.safetensors
(~2GB)Base model must be SD1.5-compatible (e.g.,
ChilloutMix
)
Troubleshooting:
Weak lighting effects → Increase
ICLightConditioning
weightArtifacts → Reduce CFG scale (current=7)