This is the workflow showcased in this YouTube tutorial:  https://youtu.be/nf2vW7GIIL8

In this episode of Stable Diffusion for Professional Creatives, we explore how to manipulate focus and create beautiful blur effects in your images using custom workflows.

Learn two different techniques: the deep blurrer and blurrer workflows, which allow you to selectively blur backgrounds or unfocused areas of your images while maintaining the overall structure and composition.  

You're going to need a couple of custom nodes that Claude helped me create, you can find them here: https://github.com/risunobushi/ComfyUI_FocusMask  

Juggernaut (SDXL): https://civitai.com/models/133005?modelVersionId=782002

Flux Fill (if you want to change the model and the whole workflow, follow the notes): https://huggingface.co/black-forest-labs/FLUX.1-Fill-dev  

IPAdapter (SDXL): https://github.com/cubiq/ComfyUI_IPAdapter_plus

IPAdapter (Flux, if you want to change the model to Flux Fill): https://github.com/Shakker-Labs/ComfyUI-IPAdapter-Flux  

All other nodes and models can be installed via the ComfyUI Manager.