ChromaHD Photorealistic Workflow

Look at examples and decide if it's worth it for yourself.

What's needed:

Chroma1-HD model (/model/1330309/chroma)

T5XXL file (https://huggingface.co/comfyanonymous/flux_text_encoders/blob/main/t5xxl_fp16.safetensors)

Nodes:

1. SigmoidOffsetScheduler (for good noise control)

What it does: This tool helps set up noise steps for Chroma models. It makes pictures clear with good colors in 30 steps, no extra bright spots.

Get it: https://github.com/silveroxides/ComfyUI_SigmoidOffsetScheduler

How to add:

Use Manager: Search "SigmoidOffsetScheduler" and click install.

By hand: Type git clone https://github.com/silveroxides/ComfyUI_SigmoidOffsetScheduler.git in your custom_nodes/ folder. If it needs more files, run pip install -r requirements.txt.

2. ComfyUI-Extra-Samplers (for special samplers and noise)

What it does: Adds more ways to mix noise, like "er_sde" for smooth changes, and SamplerCustomNoise for exact noise with a set number (like 861659032085096). Great for real photos.

Get it: https://github.com/Clybius/ComfyUI-Extra-Samplers

How to add:

Use Manager: Search "Extra Samplers" and click install.

By hand: Type git clone https://github.com/Clybius/ComfyUI-Extra-Samplers.git in your custom_nodes/ folder. If it needs more files, run pip install -r requirements.txt.

3. ComfyUI-Easy-Use (for fixing color problems)

What it does: Helps with settings so high details don't make colors wrong or add bad spots. Use it with numbers like 1 for scale and 0.99 for limit, for steady results.

Get it: https://github.com/yolain/ComfyUI-Easy-Use

How to add:

Use Manager: Search "Easy-Use" and click install.

By hand: Type git clone https://github.com/yolain/ComfyUI-Easy-Use.git in your custom_nodes/ folder. If it needs more files, run pip install -r requirements.txt. (It includes tools for better colors.)

LORAs:

lenovo ultrareal /model/1662740/lenovo-ultrareal

Chroma - Professional Photos - V1 /model/1908534?modelVersionId=2160197