Okay, looks like you got my point - we were cross-posting.

Now, HOW the heck do you gamma-correct materials?

There is no really quick way: the fastest method for simple materials is using Bantha's wacro. You bring up the obj in the advanced tab material room... I generally arrange whatever imageMap nodes there are over to the right, but that's my OCD showing, I guess. Then you apply the GC node set by runnng the wacro. He provides two, but I've only ever used the first one.

At this point, I don't use this against reflective or refractive materials. There is still a lot of discussion about exactly what the best, standardised approach should be for these types of materials. Still, making these changes will greatly affect the quality of your rendered images: try it, you'll like it.

Oh, and Those-Who-Know, jump in any time, here. I'm delighted to stand corrected on any points I've made.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks