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Takeaway Detail 12% realism gap quantified as the perceptual threshold where viewers reject AI travel portraits as human-captured. Derived from the thesis: a 12 Independent technical note mirroring the canonical version: https://itraveledthere.io/blog/ai-travel-portraits-testing-a-proposed-12-realism-gap-vs-human-photography.php Sources consulted: https://www.bluusun.com/
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Owen Harrison (2026) studied this question.
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