The "Lighting Stress" Test

See how each model interpreted the same prompt, review the evaluation criteria, and compare the final images in one place.

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Nano Banana Pro
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The "Lighting Stress" Test image generated by Nano Banana Pro
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Prompt

A dark cave illuminated only by a bioluminescent mushroom cluster on the floor (emitting cool blue light) and a torch held by an adventurer (emitting warm orange light). The lights mix on the cave walls to create purple shadows.

Evaluation Criteria

  • ✓ Light Mixing: Did the model successfully blend blue and orange to create purple/neutral tones, or are the colors just separated?
  • ✓ Directionality: Is the adventurer lit from the torch side (warm) and the feet lit from the mushroom side (cool)?
  • ✓ True Black: Are the unlit parts of the cave actually dark?

All Models

The "Lighting Stress" Test image generated by Nano Banana ProNano Banana Pro
The "Lighting Stress" Test image generated by GPT-4o image generationGPT-4o image generation