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Learning
Post Processing
What causes pixelation?
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<blockquote data-quote="WayneF" data-source="post: 530633" data-attributes="member: 12496"><p>I can't see it in the picture posted here. I assume Horoscope Fish is obviously correct about Facebook compressing your image tremendously more than the one you uploaded to them. They are trying to reduce their bandwidth.</p><p></p><p>Pixels become visible when the image is too small, so enlarged too much, so that the pixels become visible.</p><p></p><p>But JPG compression artifacts (caused at low JPG quality levels for greater compression) are seen as 8x8 pixel blocks, "squares" larger than one pixel. Also we can start seeing fringing around object edges in images.</p></blockquote><p></p>
[QUOTE="WayneF, post: 530633, member: 12496"] I can't see it in the picture posted here. I assume Horoscope Fish is obviously correct about Facebook compressing your image tremendously more than the one you uploaded to them. They are trying to reduce their bandwidth. Pixels become visible when the image is too small, so enlarged too much, so that the pixels become visible. But JPG compression artifacts (caused at low JPG quality levels for greater compression) are seen as 8x8 pixel blocks, "squares" larger than one pixel. Also we can start seeing fringing around object edges in images. [/QUOTE]
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What causes pixelation?
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