A picture of some alpacas in a field near Eynsham. Unfortunately, the camera was set to iso400 because I'd been taking pics in dull light and in interiors - this has led to some noise in the 'shadow' shot. For these pics I have used gimp-2.9 from 2017-06-26 - at that time ufraw was still accepted as a plugin for my raw files.

First, the camera's own jpeg, resized to 900 pixels high.
Camera jpeg
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Second, from the raw photo at 0EV : a bit too dark.
0EV raw
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Third, from the raw photo at +1EV : a better "correct" value.
+1EV for better starting point
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Fourth, add +2EV to "correct" for any shadow detail, so actually +3EV.
+3EV for shadow detail
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Fifth, subtract 2EV from "correct" for any highlight detail, so actually -1EV.
-1EV for highlights
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At last, use the "Three Exposures" filter.
Three Exposures
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Seventh, G'MIC Local contrast enhancement filter.
Local contrast enhancement
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Eighth, the Advanced Tone Mapping filter.
Advanced Tone mapping
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Ninth, use the curves tool for a bit more contrast.
Curve for contrast
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Finally, sharpen with the GEGL Unsharp Mask.
Unsharp Mask