Feb 18 • General discussion
Image Generation - prompt iteration tip
Sharing Learning Tip - prompt iterating with nano-banana just reduces image quality after a few cycles.
Instead, always take the 1st high quality image output, start a NEW chat, ask it to generate a new image based on attached IMAGE 1 and referencing body pose/facial expression of characters in IMAGE 2 (which should be latest scene).
Wasted a lot of time going thru pictures, only to realize later upscaling the image won't improve quality.
- This quality degradation is a known phenomenon in iterative AI editing often called "Latent Drift" or "VAEDecay."
- In 2026, Nano Banana (and models like it) works by converting your image into a mathematical "noise" space (latent space) and then back into pixels. Every time you ask for an edit on an existing image, it goes through this conversion again. After 3–4 rounds, the "translation" starts to lose data, making the image look "crunchy," overly smoothed, or "plastic-y."
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Image Generation - prompt iteration tip
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