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The original was posted on /r/stablediffusion by /u/bukulmez on 2024-10-21 03:55:29+00:00.

There are very good upscaler models for pre-FLUX models, but FLUX already produces excellent output. However, we can produce the basic size of 1024x1024. When the dimensions are enlarged, there may be distortions or unwanted things. That’s why I need to produce it as 1024x1024 and enlarge it at least 4x, 5x, and if possible up to 10x (very rare) in high quality.

Models that do very good work in 4xUltraSharp vs SD1.5 and SDXL models distort the image in flux. This distortion is especially obvious when you zoom in.

In fact, it actually ruins the fine details such as eyes, mouth, facial wrinkles, etc. that FLUX produces wonderfully.

So we need a better upscaler for FLUX. Does anyone have any information on this subject?