Digital & Data

DPI e PPI

Definição

DPI (pontos por polegada) mede a resolução de impressão; PPI (pixels por polegada) mede a resolução de tela — ambos descrevem a densidade espacial de elementos de imagem.

Explicação

Print at 300 DPI is considered photo quality; newspaper print runs at 85–150 DPI. Apple coined 'Retina display' for screens above ~300 PPI, where individual pixels become imperceptible at normal viewing distance. The iPhone 15 Pro screen is 460 PPI. Confusingly, 'DPI' is widely misused to mean PPI in software settings—they are conceptually distinct but numerically interchangeable in digital-to-print workflows.

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