Upscaling is a crutial feature when working with generative tools. The range begins with simple upscaling and sharpening specific details. In more advanced methods, the upscaling process can modify the original image in specific directions using prompts and specific LoRas.
simple static upscale method with UPSCALER
DOWNLOAD WORKFLOW : simple_static_upscale
ULTIMATE UPSCALER + ControlNet
The ULTIMATE UPSCALER in ComfyUI comes with more advanced features to reinterpret the original image. Althought, it comes quiet handy out of the box, it is preferably good to induct ControNet to the process to keep the consistency.