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<blockquote data-quote="WayneF" data-source="post: 225107" data-attributes="member: 12496">Oops.&nbsp;&nbsp; That is not right.&nbsp; It is true of JPG, we normally actually change the original data and its gone (Raw does offer an exception for that too).&nbsp;One of the most major advantages of Raw is the lossless editing.&nbsp; Changes are NEVER applied to the Raw file.&nbsp;&nbsp; There is never anything to undo. Raw simply saves the list of changes.&nbsp; When we make different changes, it simply edits the list, replaces one future instruction with another. These actual edits only occur at any output (or any viewing), only on the output, never to the original data.&nbsp; The original Raw pixels are never changed, we always start with the pristine original raw files every time, by merely opening the editor.&nbsp; We can even crop the dickens out of it, and then change our mind next month, and we see all the original pixels again. &nbsp;Lossless editing.</blockquote>

[QUOTE="WayneF, post: 225107, member: 12496"] Oops. That is not right. It is true of JPG, we normally actually change the original data and its gone (Raw does offer an exception for that too). One of the most major advantages of Raw is the lossless editing. Changes are NEVER applied to the Raw file. There is never anything to undo. Raw simply saves the list of changes. When we make different changes, it simply edits the list, replaces one future instruction with another. These actual edits only occur at any output (or any viewing), only on the output, never to the original data. The original Raw pixels are never changed, we always start with the pristine original raw files every time, by merely opening the editor. We can even crop the dickens out of it, and then change our mind next month, and we see all the original pixels again. Lossless editing. [/QUOTE]

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