technical

Why do AI images sometimes have weird hands?

AI models struggle with hands because:

  1. Complexity: Hands have many possible configurations and positions
  2. Training data: Hands appear in various positions, making patterns harder to learn
  3. Occlusion: Hands are often partially hidden in training images
  4. Latent space: The compressed representation has limited capacity for fine details

To improve hands:

  • Use negative prompts: “bad hands, extra fingers, mutated hands”
  • Try ControlNet with hand-specific models
  • Generate at higher resolutions
  • Use inpainting to fix specific issues
  • Some newer models (DALL-E 3, Flux) handle hands better