For academic purposes, here’s a demonstration of the effects of the “Protect Saturated Colors” slider in Color Rendering vs. the “Protect Saturated Colors” slider in Soft Proofing. The sample I’m showing is rendered with Color Rendering set to:
Category - Generic renderings
Rendering - DxO camera profile (E-M1MarkIII)
Intensity - 60
(This Intensity setting blends the discovered DxO camera profile with the “Natural color” profile that is equivalent to Intensity=0.)
Here’s what I start out with if the Intensity slider under “Protect saturated colors” in the Color Rendering palette is 0:
With Soft Proofing enabled, let’s set that palette’s Protect saturated colors slider to 50:
And with the Soft Proofing PSC set to 100:
Now see what the Color Rendering PSC intensity level does in comparison. First, Soft Proofing PSC set to 0, Color Rendering PSC intensity set to 100:
Add SP PSC = 50:
Now SP PSC = 100:
I ultimately chose a combination of the two. Here’s one - CR PSC = 50, SP PSC = 100:
And my final choice, CR PSC = 75, SP PSC = 80:
Never mind the out-of-gamut warnings - they don’t take the Soft Proofing PSC setting into account, only the Color Rendering PSC intensity setting. With this example, CR PSC = 100 doesn’t take care of the OOG warnings entirely. Sometimes it does, but in this case I’d need to reduce saturation further:
Here’s the result with magenta saturation = -26, which eliminates nearly all of the warnings on this object:
Is there more detail here at the expense of saturation? I’m only more convinced that the OOG warnings are frequently bogus. (All of these images are sRGB.)