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<blockquote data-quote="J-see" data-source="post: 537592" data-attributes="member: 31330">I get the same posterisation in that specific shot when I export at 75% quality even when I used a totally different program to process and export.I just checked it: <a href="https://en.wikipedia.org/wiki/Posterization" target="_blank">https://en.wikipedia.org/wiki/Posterization</a>When the conditions of the shot are right, every JPEG will show posterisation when the compression increases.To show the result when lowering the quality.I used a Mac background which is close to perfect in IQ. I exported 100%-90%-80%-70% and then zoomed in at a detail of the shot. You directly notice the artefacts even at 90%.Order is 100-90-80-70:[ATTACH]200895[/ATTACH][ATTACH]200896[/ATTACH][ATTACH]200897[/ATTACH][ATTACH]200898[/ATTACH]Compression will always cause artefacts but the severity varies from shot to shot. Best is to always use 100% quality.</blockquote>

[QUOTE="J-see, post: 537592, member: 31330"] I get the same posterisation in that specific shot when I export at 75% quality even when I used a totally different program to process and export. I just checked it: [URL]https://en.wikipedia.org/wiki/Posterization[/URL] When the conditions of the shot are right, every JPEG will show posterisation when the compression increases. To show the result when lowering the quality. I used a Mac background which is close to perfect in IQ. I exported 100%-90%-80%-70% and then zoomed in at a detail of the shot. You directly notice the artefacts even at 90%. Order is 100-90-80-70: [ATTACH=CONFIG]200895._xfImport[/ATTACH] [ATTACH=CONFIG]200896._xfImport[/ATTACH] [ATTACH=CONFIG]200897._xfImport[/ATTACH] [ATTACH=CONFIG]200898._xfImport[/ATTACH] Compression will always cause artefacts but the severity varies from shot to shot. Best is to always use 100% quality. [/QUOTE]

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