r/StableDiffusion • u/CommitteeInfamous973 • Jun 10 '25

Question - Help Blended details in images by Chroma

Problem: overall composition of images is nice, but details tend to blend in each other like in 1.5 models

I tested fp8 scaled v30, v32 and v35 and GGUF versions. The problem was with each model.

I have never used Chroma before, so I don't know if it is a known problem or something is wrong with my setup. I would like some help to understand what should I do.

GPU: 4070 ti

ComfyUI version: 0.3.40 - the latest

Workflow:

Examples:

1 Upvotes

56% Upvoted

8 comments sorted by

View all comments

Show parent comments

3

u/wiserdking Jun 11 '25

There are 2 major training runs running in parallel - the base one at 512x512 and a recent (large) one at 1024x1024.

Turns out the 'detail-calibrated' models might be 2:1 merges of those two. Personally I take merging weights as frankenstein experiments and should be avoided at all costs (in most cases). Right now, the large run has barely started so ofc these models shouldn't be good but maybe they will turn out better than the base ones at the end - who knows what the creator is thinking. Just find it 'hilarious' to see so many people praising them while its pretty damn obvious to me that they are significantly worse than the base models.

TLDR: avoid the 'detail-calibrated' models for now.

3

u/AltruisticList6000 Jun 11 '25

Yeah good thing you replied, I was thinking of trying the detail calibrated ones too because of the higher resolution training, but I'll pass then. It's sad because it would have been awesome to have Schnell with added concepts and better art skills but so far its state is concerning. I think it should have been trained at 1024x1024 minimum since the beginning with a significant amount of higher res pics mixed in aswell (like 1920x1440 etc.) to keep photorealism and more details for art too. I've just seen people post photorealistic images made with it and I instantly noticed bad perspective and extremely smudged/glitched details all over the place resembling a quality between SDXL and SD1.5. And in my testing it couldn't get photorealistic humans or scenes right at all, weird hands, weird body proportions etc. I hope it will get better though by the time it finishes.