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Halftone gradient of black dots varying top-to-bottom density for shading and visual illusion.
Houses on Buena Vista neighborhood, San Francisco, California, USA
ASTM E662 American Society for Testing and Materials acronym.Test Method for Smoke Density in Fire Testing of Materials measuring optical density.
High-density small cellular texture creating a busy blue field; decorative background with micro-structure detail.
Colorful daytime long exposure with neutral density filter of Kayseri, Derebag Waterfall and Derebag National Park.

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