PNG · 5 KB
Test pattern: 16-step grayscale
Sixteen equal steps from black to white. Every step should be distinguishable; merged steps reveal crushed shadows or clipped highlights.
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curl -L -o test-pattern-grayscale-steps.png https://files.samplefiles.com/image/png/test-pattern-grayscale-steps.pngwget https://files.samplefiles.com/image/png/test-pattern-grayscale-steps.pnghttps://files.samplefiles.com/image/png/test-pattern-grayscale-steps.pngprintf '%s %s\n' 221c66ce3360751a0c42f5be2daad0babe24d64b55fa7b963556913a05a2715a test-pattern-grayscale-steps.png | shasum -a 256 -cOr check the download in your browser with the checksum calculator.
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