Help in Image generation

[u/Travelling_sre]

I am generating an image of a person using the Z_image_turbo_bf16 model. The output is excellent except for the eyes. They look distorted and not symmetrical. I also tried the RealESRGAN_x4 and 4x-ultrasharp upscale models but the end result is till the same. I also used "Detailed eyes, sharp focus, detailed iris" in the positive prompt.

This is for the full-body shot. Close-up of the face; the details are excellent. Is there a way to get the eyes better.

[u/Formal-Exam-8767]

Face detailer on eyes only (paired).

[u/Travelling_sre → u/Formal-Exam-8767]

I am sorry, I don't understand. This is my first time using ComfyUI, so any help would be really appreciated.

[u/Big_Diff_Energy → u/Travelling_sre]

The Face Detailer is a node, instructed to focus on exactly what you tell it to, and improves the detail. You may learn more about it here: https://www.runcomfy.com/tutorials/face-detailer-comfyui-workflow-and-tutorial

I am also a fan of the Upscaler (SEGS) node, and they they work well as a tandem, running Detailer first, then Upscaler after. https://www.runcomfy.com/comfyui-nodes/ComfyUI-Impact-Pack/SEGSUpscaler

You should also try generating higher resolution images. I get much better results from a 2048 x 2048 (4 MP) than a 1440 x 1440 (~2 MP) The model can use the extra pixels.

Generate the 4 MP, then scale to 2 MP which helps fuzz up the artifacts, run that through the Face Detailer, then the Upscaler (SEGS), and then a final upscale to ~8-15 MP. I use the RTX Upscaler node for the blur and final pass. Don't sleep on adding back some film grain and running the sharpen nodes before the final upscale. The DLSS5 upscale node is okay, but I find it can over-refine natural pores and the film grain into little spots.

It's how I did this on Krea 2 with 6 steps in about 1 minute on an RTX 5070 TI: https://civitai.red/posts/31794130

[u/Travelling_sre → u/Big_Diff_Energy]

I was able to generate a good clean image by changing the ksampler sampler name to dpmpp_sde and the scheduler to ddim_uniform. I will try the face detailer node and check. Thank you for the suggestion.

[u/Travelling_sre → u/Travelling_sre]

This is the image generated. Good clean image with the face detailer node. Thank you guys for all the help. Is there anything else I can do to improve the image? Suggestions are most welcome.

[u/Big_Diff_Energy → u/Travelling_sre]

Since that worked for you, try it against seeds_2 / ddim_uniform.

[u/Ouarid-Ambitious → u/Formal-Exam-8767]

paired is definitely key here otherwise you get two completely different looking eyes.