Hi Tony,
Please see the video below. It should shed some light on your question (when and why to use ODR)
With all due respect, we have been across the pond pals for a long time, and I must be honest.
You seem to have a penchant for wanting to know the proper setting to apply to all your images not only for the check box in ODR, but also for DFS sharpening, and Noise reduction, Contrast, etc.
Only if you shoot a series of almost identical shots, like portraits or panos would you think of applying the settings to all in the set.
Even that is covered in the multiple Raw Refine where you can apply white balance and fill, and
ODR etc to all in a selected set.
Here we have a tick box which turns on a process to the raw image. That process is not quantitative. It doesn't do the same thing every time to any image.
Each image is read, and when you turn on the tick box , it applies what improvement it can make to the readings of that image.
There is therefore no preset amount on which you can say add this to all.
The exact same thing applies to Sharpening. In the editor, the DFS tool allows you to sharpen as needed, "IF NEEDED".
If you check Select Color, and do the automatic apply, you can see each image will show a different amount of boost depending on whaat it can take without blowing out. That is the underlying brilliance built into Qimage Ultimate. It measures the ODR applied to an image by measuring parameters, same as the color, same as the Adaptive noise reduction, same as Raw exposure processing.
Please watch the two videos and pay particular attention to the last 5 minutes of the upper one where ODR is not needed at all.
https://youtu.be/OrOJw5lRWiYhttps://youtu.be/uh5WG6EzotoFred