Preview tab

Preview tab
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This shows the embedded preview in the X3F file - in SD14 and later cameras, there is a full sized embedded JPEG within the X3F file.

The RAW processed images contain all the RAW data available, by default, which is more than in the preview and standard sized output. To make comparing the preview and RAW images easier, I positioned the preview so that the image within it aligns up with the larger RAW images.

You can export the preview image "as is" in the export tab.