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Klein Anatomy / Quality Fixer v1.5: a slider that corrects Flux.2 Klein anatomy

Topic: Models
By Captain
Published 2026-09-30
Example renders
Prompts and settings shared by the people who made these renders on Civitai. Pick a render to see how it was made.
Settings
Sampler
Euler
Steps
12
Guidance
1
Seed
20165634
Size
832x1216
Weight used
2
Prompt
l3n0v0, The image is a portrait of a young beautiful woman sitting on a bed. She is wearing a white long-sleeved shirt that is pulled up above her breasts and is looking directly at the camera with a soft smiling expression on her face. Her breasts would be exposed but she is holding a cardboard sign in front of it, making the image safe for work and not showing any nipples. She holds a selfmade cardboard sign into the camera with the words: "need BUZZ pls". Her medium long dark blonde hair is styled in loose waves and falls over her shoulders. , written on it. The skin details are very sharp and realistic. The background is blurred, but it appears to be a bedroom with a window and a painting hanging on the wall. The lighting is soft and natural, highlighting the woman's features. The overall mood of the image is sensual and intimate. fluxtrait
Settings
Sampler
Euler
Steps
12
Guidance
1
Seed
842601860
Size
832x1216
Weight used
0.4
Prompt
young blond haired woman slim and super sexy, fair skin, wavey blonde hair, seated with natural joyful smile, playful fashion revealing top, vintage 1950s diner interior with cozy low lighting booths and chrome accents, retro details, nostalgic lighting, visible skin texture and fine facial details, ultra-realistic portrait style. super realistic reflections from the chrome wall behind her.
Settings
Sampler
Euler
Steps
12
Guidance
1
Seed
1596666349
Size
832x1216
Weight used
1
Prompt
casual Instagram selfie, amateur smartphone photo, average image quality, natural imperfect framing, slightly uneven lighting, realistic skin texture, subtle phone camera processing, authentic everyday snapshot, unpolished and spontaneous, instagram quality picture, low quality selfie, , compressed jpg,young woman in her early 20s, natural soft features, light freckled skin, long brown hair, randomly chosen hairstyle, varied hair styling in each generation, natural loose strands, hazel-green eyes, full lips, gold hoop earring, wearing a short cream floral blouse with small red flowers and green leaves, sheer light fabric, lace trim, gathered neckline with a small tie bow, slightly open at the chest, short puffy sleeves
Negative prompt
deformed, distorted, disfigured, bad anatomy, bad hands, missing fingers, extra limbs, poorly drawn face, mutation, ugly, extra limbs, extra digits, fewer digits, cropped, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry, 3d, cgi, digital, illustration, painting, anime, cartoon, over-sharpened
l226's Anatomy Fixer for Flux.2 Klein 9B is a concept slider that fixes hands, limbs and glitches at weights 2-3 while keeping the seed. Learn how it works, the right weight and when to use v1.0 instead.

Overview

Klein Anatomy / Quality Fixer is a concept slider
LoRA
trained so that negative weights act like a negative Stable Diffusion prompt and positive weights do the opposite. v1.5 only changes anatomy (v1.0 also changed overall quality). Weight 2.0 mostly keeps the seed intact and fixes minor glitches; 3.0 fixes more prominent artifacts.
It cannot fix everything, but it is the most practical anatomy repair for
Klein 9B
, and it also cleans the picture slightly.

Reference

Name
Type
What it is
LoRA weight
2.0-3.0
2.0 default; 3.0 for strong artifacts.
Trigger
none
Base
Flux.2 Klein 9B
4B version exists.
Seed
kept
At 2.0 the composition stays.
Versions
v1.0 / v1.5
v1.5 anatomy only.
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Step by step

  1. Generate the image and spot the anatomy problem.
  2. Add the fixer at 2.0 and rerun the same seed.
  3. If hands are still wrong, 3.0.
  4. Keep other LoRAs in place; it stacks.
  5. Use v1.0 if you also want a general quality lift.

Examples

Portrait repair

l3n0v0, a portrait of a young woman sitting on a bed in a white long-sleeved shirt, soft smile, looking at the camera, window light.
Anatomy Fixer 2.0 after a hand glitch

Diner scene

A young woman with wavy blonde hair seated in a vintage 1950s diner booth, chrome accents, cozy low light, joyful smile.
Anatomy Fixer 3.0

Creative idea: horror inversion

A mannequin showroom at night, fluorescent flicker.
Anatomy Fixer -2.0 for unsettling figures

Tips

  • It is a repair tool; leave it at 0 when nothing is wrong.
  • Works well with Lenovo UltraReal Klein for realistic portraits.
  • Negative weights deliberately break anatomy, useful for horror.
  • Check hands at 100 percent zoom.

Troubleshooting

Image changed too much

Why it happens
Weight above 3.

How to fix it
2.0-2.5.

No fix

Why it happens
Severe artifacts.

How to fix it
3.0 or regenerate; it cannot fix everything.

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Questions

Trigger?

None.

4B?

A 4B build exists; behavior is similar.

Links and sources

Models in this guide

Written by
Captain

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