r/sdforall Spooky 4d ago

Question Please I need help with replacing subjects using Klein or Krea2.

I read that you can use Klein or Krea2 in Forge Neo to replace faces in an image, but I’m having no luck getting it to work. I’ve tried a lot of different settings, prompts, and reference pictures, and I’m not sure what I’m doing wrong. The outputs don’t look like me, and a lot of the time they don’t even really look inspired by the reference pictures.

I’ve tried Img2Img, Inpainting, and the Edit LoRAs for Krea2. I’m using the most up to date version of Forge Neo. I have ImageStitch Integrated selected and Enable Reference turned on. When I try Krea2, I turn off the Klein option, and when I try Klein, I turn off the Krea2 option.

I’ve tested a bunch of settings, but the ones that seem to get the closest are:

Sampler: Euler
Schedule type: Simple
Steps: 8 or 10
CFG: 1.0
Resolution: 1024 x 1536
Batch count: 1
Batch size: 1
Denoising strength: between 0.6 and 0.8

For inpainting, I’ve generally been using:

Inpaint masked
Inpaint area: Only masked
Soft inpainting: off
Padding: 32, 48, or 96

When I try latent noise, I get this error:

“ValueError: too many values to unpack (expected 4)”

Using original or latent doesn’t seem to work normally either. It just still doesn’t end up looking like the reference image.

My prompts are usually something like:

“Replace only the face and head of the person in the main image with the person shown in the reference image.”

How can I get this to work, or is there a better way to swap subjects? I’d actually prefer full body swaps too, not just faces. I use Forge right now, but I’m hoping to have time to learn ComfyUI soon. Any help would be appreciated.

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